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]
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]
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. doi:10.14411/eje.2019.042
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.