Tolchkov, V., Hodzhev, Y., Tsafarova, B., Nenova, R., Mikov, O., Simov, N., Slavov, G., Nedyalkov, N., Langurov, M., Bekchiev, R., Stoev, P., Nikolova M., Panaiotov, S., 2024. Human pathogens among bats. — Problems of Infectious Parasitic Diseases, 52 (2): 32—38. https://doi.org/10.58395/51hccc30
Kostova, R., Borissov, S., Bobeva A., Bekchiev, R., 2024. At a crossroads: Genetic lineages and dispersal routes of Morimus asper (Sulzer, 1776) s.l. (Coleoptera, Cerambycidae) in Bulgaria. — Biodiversity Data Journal, 12: e116619. https://doi.org/10.3897/BDJ.12.e116619
Georgiev, D., Manh, V. Q., Simov, N., Bekchiev, R., Hieu, N. V., Hoang, L. T., 2024. New records of Psocoptera (Insecta) from Vietnam. — Historia naturalis bulgarica, 46: 211—214. [PDF] https://doi.org/10.48027/hnb.46.081
Toshkova, N., Dimitrova, K., Langourov, M., Zlatkov, B., Bekchiev, R., Ljubomirov, T., Zielke, E., Angelova, R., Parvanova, R., Simeonov, Tz., Simov, N., 2023. Snacking during hibernation? Winter bat diet and prey availabilities, a case study from Iskar Gorge, Bulgaria. — Historia naturalis bulgarica, 45: 125—142. [PDF] https://doi.org/10.48027/hnb.45.053
Kostova, R., Bekchiev, R., Popgeorgiev, G., Kornilev, Y. V., 2023. First exhaustive distribution and habitat modelling of Morimus asper (Sulzer, 1776) sensu lato (Coleoptera, Cerambycidae) in Bulgaria. — Nature Conservation, 53: 39—59. https://doi.org/10.3897/natureconservation.53.104243
Kostova, R., Bekchiev, R., 2023. Ground beetle (Coleoptera: Carabidae) taxocoenoses from high altitude Pinus peuce and Pinus heldreichii forests in Bulgaria. — Historia naturalis bulgarica, 45 (7): 187—196. [PDF] https://doi.org/10.48027/hnb.45.073
Kostova, R., Bekchiev, R., 2023. Data on the distribution of Osmoderma barnabita Motschulsky, 1845 (Coleoptera: Cetoniidae) in Bulgaria from 1904 to 2022. — Historia naturalis bulgarica, 45 (6): 155—161. [PDF] https://doi.org/10.48027/hnb.45.061
Kostova, R., Bekchiev, R., 2023. Trechus (s. str.) “subnotatus” species group (Coleoptera: Carabidae) in Bulgaria. — Zootaxa, 5264 (4): 505—525. https://doi.org/10.11646/zootaxa.5264.4.3
Bekchiev, R., Kostova, R., 2023. New data about the distribution of Plectophloeus fischeri (Aubé, 1833) and Dicentrius biroi Besuchet, 1999 (Coleoptera: Staphylinidae: Pselaphinae) in Bulgaria. — Historia naturalis bulgarica, 45 (2): 39—42. [PDF] https://doi.org/10.48027/hnb.45.024
Bekchiev, R., Kostova, R., 2022. The Subfamily Pselaphinae (Coleoptera: Staphylinidae) of South-western Bulgaria: Rila and Pirin Mountains. — Acta zoologica bulgarica, 74 (2): 169—174.
Bekchiev, R., Antov, M., Boyadzhiev, P., Zaemdzhikova, G., Kostova, R., Guéorguiev, B., 2022. Carabus variolosus (Fabricius, 1787) (Coleoptera: Carabidae) in Bulgaria: rediscovered after 111 years. — Historia naturalis bulgarica, 44 (10): 119—123. [PDF] https://doi.org/10.48027/hnb.44.103
Bekchiev, R., Crevecoeur, L., Gielen, K., Bosmans, B., Smets, K., Kostova, R., 2020. One Hundred Years of Solitude: Rediscovery of the Rare and Protected Beetle Rhysodes sulcatus (Fabricius, 1787) (Coleoptera: Rhysodidae) in Bulgaria. — Acta zoologica bulgarica, (in print) published online at http://www.acta-zoologica-bulgarica.eu/002372.
Асенова, А., Лангуров, М., Симов, Н., Бекчиев, Р., 2020. Бъдете равни с природата. Учебно помагало за деца от предучилищна възраст. — Община Кюстендил, Национален природонаучен музей—БАН, София, 56 с. [PDF]
Асенова, А., Лангуров, М., Симов, Н., Бекчиев, Р., 2020. Будите једнаки са природом. Кратка образовна књижица за децу предшколског узраста. — Општина Ћустендил, Национални природњачки музеј—БАН, Софија, 55 с. [PDF]
Ćurčić, S., Pavićević, D., Radović, D., Vesović, N., Bekchiev, R., Ćurčić, N., Guéorguiev, B., 2019. Current and predicted distribution of the rare and threatened beetle Bolbelasmus (Bolbelasmus) unicornis (Coleoptera: Geotrupidae) in Serbia. — European Journal of Entomology, 116: 413—424. https://doi.org/10.14411/eje.2019.042
Kostova, R., Bekchiev, R., Beshkov, S., 2019. Coleoptera and Lepidoptera (Insecta) diversity in the central part of Sredna Gora Mountains (Bulgaria). — Bulletin of the Entomological Society of Malta, 10: 75—95. [PDF]
Langourov, M., Simov, N., Bekchiev, R., Chobanov, D., Antonova, V., Dedov, I., 2018. Inventory of Selected Groups of Invertebrates in Sedge and Reedbeds not Associated with Open Waters in Bulgaria. — Acta zoologica bulgarica, 70 (4): 487—500. [PDF]
Bekchiev, R., Guéorguiev, B., Kostova, R., Chehlarov, E., Sivilov, O., 2018. New Records of Rare and Threatened Beetles (Insecta: Coleoptera) in Bulgaria. — Acta zoologica bulgarica, 70 (4): 501—506.
Sabella, G., Bekchiev, R., Kostova, R., 2017. Pselaphinae (Coleoptera Staphylinidae) from Sicily and Calabria (Italy). Results from a short entomological expedition in April, 2015. — 3rd International Congress 'Biodiversity, Mediterranean, Society', September 4th—6th 2015, Volume 8. Biodiversity Journal, Noto-Vendicari (Italy). 185—192 pp. [PDF]
Bekchiev, R., Sivilov, O., Kostova, R., Lapeva-Gjonova, A., 2017. Distribution of Amorphocephala coronata (Germar, 1817) (Coleoptera: Brentidae) in Bulgaria. — ZooNotes, 104: 1—3. [PDF]
Bekchiev, R., 2017. Terestrial invertebrates — Coleoptera. — pp. 101—103. Ivanova, V. (ed.) Mapping and Assessment of Ecosystem Services of Wetlands in Bulgaria , IBER-BAS, Sofia. 185 pp.
Бекчиев, Р., Бешков, С., Арангелов, С., Киров, Д., 2017. Определител на животинските видове за оценка на гори с висока консервационна стойност. — WWF, София, 191 с. [PDF]
Костова Р., Лазаров, С., Бекчиев, Р., Горанов, С., Симов, Н., Бешков, С., 2016. Почвени и пещерни безгръбначни животни. — В: Спелеоложки проучвания на пещерите в община Годеч (част 1), Асоциация на спелеоклубове в София, 39—50. [PDF]
Bekchiev, R., Hlaváč, P., 2016. New and interesting species of the genus Bryaxis Kugelann, 1794 (Coleoptera, Staphylinidae, Pselaphinae) from Croatia. — Zootaxa, 4144 (1): 109—116.
Yin, Z.-W., Coulon, G., Bekchiev, R., 2015. A new species of Pseudophanias Raffray from a cave in central Nepal (Coleoptera: Staphylinidae: Pselaphinae). — Zootaxa, 4048 (3): 446—450.
Savev, S., Borisov, M., Bekchiev, R., Kostova, R., Tsankov, N., Shurulinkov, P., Petrov, B., 2015. Old forests in Strandja Nature Park — conservation and sustainable management. — Directorate of Strandja Nature Park, Malko Tarnovo, 200 pp. (In Bulgarian).
Hristovski, S., Slavevska-Stamenković, V., Hristovski, N., Bekchiev, R., Chobanov, D., Dedov, I., Devetak, D., Karaman, I., Kitanova, D., Komnenov, M., Ljbomirov, T., Melovski, D., Pešić, V., Simov, N., 2015. Diversity of invertebrates in the Republic of Macedonia. — Macedonian Journal of Ecology and Environment, 17 (1): 5—44. [PDF]
Bekchiev, R., Guéorguiev, B., 2015. First purposive study of beetles (Coleoptera) from endogean environments in Bulgaria: collection sites and preliminary results. — Biodiversity Journal, 6 (1): 327—340. [PDF]
Bekchiev, R., Brachat, V., Anlas, S., Özgen, I., Yağmur, E. A., Örgel, S., Gjonov, I., Kostova, R., 2015. Contribution to the Pselaphinae (Coleoptera: Staphylinidae) of Anatolia, Turkey. — Acta zoologica bulgarica, 67 (3): 319—324. [PDF]
Yin, Z.-W., Bekchiev, R., Li, L.-Z., 2014. A new species of Lasinus Sharp (Coleoptera: Staphylinidae: Pselaphinae) from East China. — Zootaxa, 3764 (5): 597—600.
Sabella, G., Bekchiev, R., 2014. A New Species of Tychus Leach, 1817 of the Armeniacus species Group (Coleoptera, Staphylinidae, Pselaphinae)from Greece. — Acta zoologica bulgarica, 66 (3): 313—315. [PDF]
Langourov, M., Lazarov, S., Stoev, P., Guéorguiev, B., Deltshev, C., Petrov, B., Andreev, S., Simov, N., Bekchiev, R., Antonova, V., Ljubomirov, T., Dedov, I., Georgiev, D., 2014. New and interesting records of the MSS and cave fauna of Vitosha Mt., Bulgaria. — Proceedings of Balkan Speleological Conference 'Sofia’2014', Sofia, Bulgaria, 28—30 March 2014. Caving Club 'Helictite' — Sofia, pp. 66—76. [PDF]
Bekchiev, R., Brachat, V., 2014. Revision of the genus Delenda Croissandeau, 1891 (Coleoptera: Staphylinidae: Pselaphinae). — Zootaxa, 3765 (6): 583—592.
Georgiev, G., Doychev, D., Simov, N., Guéorguiev, B., Bekchiev, R., 2013. Contribution to the knowledge to the of Cerambycid fauna (Coleoptera: Cerambycidae) of Belasitsa Mountain in Bulgaria. — Silva Balcanica, 14 (1): 109—116. [PDF]
Bekchiev, R., Hlaváč, P., Nomura, S., 2013. A Taxonomic Revision of Tyrini of the Oriental Region. Part V. Revision of the genus Lasinus Sharp, 1874 (Coleoptera: Staphylinidae: Pselaphinae). — ZooKeys, 340: 21—42. https://doi.org/10.3897/zookeys.340.5980 [PDF]
Bekchiev, R., Hlaváč, P., 2013. Description of a new unusual Pselaphodes Westwood, 1870 (Coleoptera: Staphylinidae: Pselaphinae) from Nepal. — Zootaxa, 3700 (3): 495—498.
Bekchiev, R., 2013. Faunistic review and description of a new species of Pselaphinae (Coleoptera: Staphylinidae) from the Strandzha Mountains (Bulgaria and Turkey). — Turkish Journal of Zoology, 37: 431—440. [PDF]
Bekchiev, R., 2013. Description of a new species of Trimium Aubé, 1833 (Staphylinidae: Pselaphinae) from Bulgaria and Greece. — Acta zoologica bulgarica, 65 (3): 289—291. [PDF]
Bekchiev, R., 2013. A study of the Pselaphinae (Coleoptera, Staphylinidae) in the Rhodopes Mountain (Bulgaria). — In: Biodiversity of Western Rhodopes (Bulgaria and Greece) II. — Pensoft & Nat. Mus. Natur. Hist., Sofia: 267—278. [PDF]
Bekchiev, R., 2013. A new species of Tychobythinus Ganglbauer, 1896 (Coleoptera: Staphylinidae: Pselaphinae) from Turkey. — Biodiversity Data Journal, 1: e963. https://doi.org/10.3897/BDJ.1.e963 [PDF]
Bekchiev, R., 2011. The subfamily Pselaphinae (Coleoptera: Staphylinidae) of Southwestern Bulgaria II — Belasitsa Mts. — Biologia, 66/3: 506—508.
Bekchiev, R., 2011. Description of the second species of the genus Taiwanophodes Hlavác, 2002 (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam. — Russian Entomol. J., 19 (3): 183—185.
Guéorguiev, B., Bekchiev, R., Chehlarov, E., Hristovski, S., Prelik, D., Cvetkovska-Gorgievska, A., 2010. New Coleoptera (Insecta) Species from Republic of Macedonia. — Acta zoologica bulgarica, 62 (3): 363—365. [PDF]
Bekchiev, R., Zlatkov, B., 2010. On the distribution of Propomacrus bimucronatus (Pallas, 1781) (Col.: Euchiridae) in Bulgaria. — The Entomologist’s Record and Journal of Variation, 122 (6): 274—276. [PDF]
Bekchiev, R., 2010. Note on Pselaphinae (Coleoptera: Staphylinidae) Fauna of Turkey (European part). — Acta entomologica slovenica, 18 (1): 47—52.
Bekchiev, R., 2010. New data for Omoglymmius germari (Ganglbauer, 1892) (Rhysodidae: Coleoptera) in Bulgaria. — ZooNotes, 11: 1—3. [PDF]
Bekchiev, R., 2010. Faunistical research on Pselaphinae fauna (Coleoptera: Staphylinidae) in several regions of South-West Bulgaria. — PhD thesis (in Bulgarian). [PDF]
Guéorguiev, B., Bekchiev, R., 2009. A contribution to the coleopteran fauna of Bulgaria (Insecta: Coleoptera). — Acta zoologica bulgarica, 61 (1): 39—44. [PDF]
Bekchiev, R., Hlavac, P., 2008. New species of the genus Dicentrius Reitter, 1882 (Coleoptera: Staphylinidae, Pselaphinae) from the western Serbia. Advances in the studies of the biodiversity of the Balkan Peninsula. — Papers dedicated to the memory of Guido Nonveiller, pp. 241—243. [PDF]
Bekchiev, R., 2008. Variability in the structure of the aedeagus of Dicentrius rousi Bes. 1999 (Coleoptera: Staphylinidae, Pselaphinae). — Acta zoologica bulgarica, Suppl. 2: 25—28. [PDF]