Naumova, M., Lazarov, S., Deltshev, C., 2019. Faunistic diversity of the spiders in Montenegro. — Ecologica Montenegrina, 22: 50—89.
Dimitrov, D., Deltshev, C., Lazarov, S., 2019. Description of Harpactea popovi sp. n. from Bulgaria with further taxonomic notes on related species (Araneae, Dysderidae). — Zootaxa, 4568 (3): 593—600. doi:10.11646/zootaxa.4568.3.13 [PDF]
Lazarov, S., Dimitrov, D., 2018. Description of Harpactea petrovi sp. n. (Araneae: Dysderidae) from Bulgaria. — Acta zoologica bulgarica, 70 (3): 293—296. [PDF]
Deltshev, C., Lazarov, S., 2018. Two new spider species, Harpactea simovi sp. n. and H. stoevi sp. n. (Araneae: Dysderidae), from the Balkan Peninsula. — Acta zoologica bulgarica, 70 (2): 3—7.
Naumova, M. V., Blagoev, G., Dimitrov, D., Lazarov, S., Deltshev, C., 2017. New data on the spider fauna (Arachnida: Araneae) of Bulgaria. — Acta zoologica bulgarica, 69 (4): 477—481. [PDF]
Dimitrov, D., Deltshev, C., Lazarov, S., 2017. Description of Histopona breviemboli sp. n. from the Balkan Peninsula (Arachnida, Araneae, Agelenidae). — Zootaxa, 4311 (2): 283—286. doi:10.11646/zootaxa.4311.2.10 [PDF]
Naumova, M., Lazarov, S., Petrov, B., Deltshev, C., 2016. New faunistic data on the cave-dwelling spiders in the Balkan Peninsula (Araneae). — Ecologica Montenegrina, 7: 425—438.
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]
Deltshev, C., Blagoev, G., Komnenov, M., Lazarov, S., 2016. Description of Ozyptila balcanica sp. n. from the Balkan Peninsula and its comparison with the closely related O. umbraculorum Simon, 1932 (Araneae: Thomisidae). — Acta zoologica bulgarica, 68 (4): 483—490.
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]
Simov, N., Langourov, M., Dedov, I., Lazarov, S., 2013. Field guide on the biodiversity of Pirin 10x10. A training aid for FCS from 4th to 8th class Student’s materials. — Regional environmental centre for the Central and Eastern Europe — branch Bulgaria. 96 pp. (in Bulgarian).
Deltshev, C., Lazarov, S., Naumova, M., Stoev, P., 2011. A survey of spiders (Araneae) inhabiting the euedaphic soil stratum and the superficial underground compartment in Bulgaria. — Arachnologische Mitteilungen, 40: 33—46 [PDF]
Deltshev, C., Lazarov, S., Blagoev, G., Naumova, M., 2011. Spiders (Araneae) from the Western Rhodopes Mts (Bulgaria). — In: Beron, P. (ed.), Biodiversity of Bulgaria 4. Biodiversity of Western Rhodopes (Bulgaria and Greece) II. Pensoft and National Museum of Natural History, Sofia, pp. 63—103.
Lazarov, S., Naumova, M., 2010. Two new species of Harpactea from Bulgaria (Araneae: Dysderidae). — Revue suisse de Zoologie, 117 (1): 101—110. [PDF]
Lazarov, S., 2010. Description of the female of Dysderocrates silvestris Deelman-Reinold, 1988 with new data on its distribution in the Balkan Peninsula (Araneae: Dysderidae). — Revista Iberica de Arachnologia, Vol. 18: 111—113. [PDF]
Lazarov, S., 2010. A new spider species from Bulgaria, Harpactea krumi sp. n. (Araneae, Dysderidae). — Acta zoologica bulgarica, 62 (1): 27—31. [PDF]
Stoev, P., Popov, A., Blagoev, G., Lazarov, S., 2009. Fifty years of devotion to spiders: a concise biography of Christo Deltshev, with a complete list of his publications and described taxa. — ZooKeys, 16: 1—26. doi:10.3897/zookeys.16.238 [PDF]
Lazarov, S., 2009. Spiders (Araneae) from Maquises in SW Bulgaria — Part II. — Acta zoologica bulgarica, 61 (1): 33—37. [PDF]
Lazarov, S., 2009. A New Spiders Species From Bulgaria Harpactea terveli sp. n. (Araneae, Dysderidae). — International Journal of Academic Research, 1 (2): 96—98. [PDF]
Lazarov, S., 2009. Harpactea konradi, a new spider species from Bulgaria, (Araneae, Dysderidae). — Zootaxa, 2140: 33—37. [PDF]
Stefanovska, D., Naumova, M., Deltshev, C., Lazarov, S., 2008. Spiders from the Skopje Region. A Faunistic and Zoogeographical Analysis. — Historia naturalis bulgarica, 19: 35—49. [PDF] doi:10.5281/zenodo.4043626
Naumova, M., Deltshev, C., Blagoev, G., Lazarov, S., 2008. Spiders (Araneae) from Lyulin Mountain (W Bulgaria). — Acta zoologica bulgarica, 60 (3): 267—276. [PDF]
Lazarov, S., Deltshev, C., 2008. New data for Harpactea sanctaeinsulae Brignoli, 1978 and description of the unknown female (Araneae, Dysderidae). — Turkish Journal of Arachnology, 1 (1): 67—69. [PDF]
Lazarov, S., 2008. A new spider species, Harpactea asparuhi sp. n., from Bulgaria (Araneae: Dysderidae). — Revista Iberica de Arachnologia (Proceedinngs 23rd ECA), Vol. 15: 25—27. [PDF]
Lazarov, S., 2008. A Record of Dysdera tartarica Kroneberg, 1875 with Description of its Unknown Female (Araneae, Dysderidae). — Turkish Journal of Arachnology, 1 (2): 104—106. [PDF]
Lazarov, S., 2008. A New Spider Species from Bulgaria, Harpactea kubrati sp. n. (Araneae, Dysderidae). — Acta zoologica bulgarica, 60 (2): 219—221. [PDF]
Lazarov, S., 2007. Spiders (Araneae) from Maleshevska Mountain (SW Bulgaria) — Part I. — Acta zoologica bulgarica, 59 (2): 133—144. [PDF]
Lazarov, S., 2007. New Data on the distribution of Harpactea srednogora Dimitrov & Lazarov 1999 in Bulgaria with description of female (Araneae: Dysderidae). — Historia naturalis bulgarica, 18: 29—33. [PDF] doi:10.5281/zenodo.4043580
Lazarov, S., 2007. Fauna and zoogeograpy of Haplogynae spiders (Araneae) in Bulgaria. — In: Fet, V., Popov, A. (eds). Biogeography and Ecology of Bulgaria, Springer: 481—490.
Димитров, М., Хубенов, З., Бешков, С., Златков, Б., Стефанов, Т., Цанков, Н., Шурулинков, П., Петров, Б., Лазаров, С., Дончева, Н., Димова, Д., 2007. Ръководство за планиране на дейности в земи и гори от горския фонд в НАТУРА 2000 защитени зони. — Фар, София, 70 с. [PDF]
Deltshev, C., Lazarov, S. Stojkoska, E., 2007. A Contribution to the Study of Spiders from the Caves of Republic Macedonia (Araneae). — Acta zoologica bulgarica, 59 (3): 337—340. [PDF]
Lazarov, S., 2006. A new spider species from Bulgaria, Harpactea samuili sp. n. (Araneae, Dysderidae). — In: European Arachnology 2005 (Deltshev, C. & Stoev, P., eds), Acta zoologica bulgarica, Suppl. 1: 81—85. [PDF]
Lazarov, S., 2006. A new spider species from Bulgaria, Harpactea alexandrae sp. n. (Araneae, Dysderidae). — Acta zoologica bulgarica, 58 (1): 13—16. [PDF]
Lazarov, S., 2005. Spiders (Araneae) from Maquises in SW Bulgaria — Part I. — Acta zoologica bulgarica, 57 (2): 145—152. [PDF]
Lazarov, S., 2005. A new species from Bulgaria, Brachythele langourovi sp. n. (Araneae, Nemesiidae). — Revue suisse de Zoologie, 112 (1): 189—193. [PDF]
Lazarov, S., 2004. A Contribution to the Study of Spiders (Araneae) in Macedonia. — Acta zoologica bulgarica, 56 (2): 155—166. [PDF]
Deltshev, C., Lazarov, S., Blagoev, G., 2004. Spiders (Araneae) from Eastern Rhodopy Mountains (Bulgaria, Greece). — In: Beron, P., Popov, A. (eds). Biodiversity of Bulgaria. 2. Biodiversity of Eastern Rhodopes (Bulgaria and Greece). Pensoft & Nat. Mus. Natur. Hist., Sofia, 181—198. [PDF]
Antov, A., Deltshev, C., Lazarov, S., Blagoev, G., 2004. A Faunistic and Zoogeographical Analysis. — In: Penev, L. et al (eds), Ecology of the City of Sofia: 355—363.
Deltshev, C., Lazarov, S., Petrov, B., 2003. A Contribution to the Study of Spiders (Araneae) from the Caves of Bulgaria. — Acta zoologica bulgarica, 55 (2): 9—28. [PDF]
Blagoev, G., Deltshev, C., Lazarov, S., 2002—2015. The Spiders (Araneae) of Bulgaria. — National Museum of Natural History, Bulgarian Academy of Sciences, online at https://www.nmnhs.com/spiders-bulgaria/.
Lazarov, S., 2002. A review of the family Dysderidae (Araneae) in Bulgaria faunistic and zoogeographical analysis. — European Arachnology 2002. Proceedings of the 20th European Colloquium of Arachnology, Szombathely 22—26 July 2002): 259—265. [PDF]
Dimitrov, D., Lazarov, S., 2002. A Contribution to the Study of the Spiders (Araneae) in Chepun Mountain and Dragoman Swampland (NW Bulgaria). — Acta zoologica bulgarica, 54 (2): 47—53. [PDF]
Tzonev, G., Lazarov, S., 2001. A Contribution to the Study of Spiders (Araneae) in Osogovo Mountain, South-West Bulgaria. — Acta zoologica bulgarica, 53 (2): 67—78. [PDF]
Lazarov, S., Deltshev, C., Blagoev, G., 2001. The Spiders (Araneae) of Sashtinska Sredna Gora Mountain (Bulgaria). Faunistic and Zoogeographical Analysis. — Acta zoologica bulgarica, 53 (1): 3—28. [PDF]
Blagoev, G., Lazarov, S., Deltshev, C., 2001. [Spiders (Araneae) in Kresna Gorge]. — In: Beron, P. (ed.): Biodiversity of Kresna Gorge (SW Bulgaria), 85—102.
Petrov, B., Lazarov, S., 2000. Steatoda triangulosa (Walckenaer, 1802) feeding on a European Blind snake. — Newsl., Br. Arachnol. Soc., 88: 9—10. [PDF]
Dimitrov, D., Lazarov, S., 1999. Two new species of Harpactea from Bulgaria (Araneae: Dysderidae). — Berichte des Naturwissenschaftlich-Medizinischen Vereins in Innsbruck, 86: 127—129. [PDF]
Lazarov, S., 1998. A contribution to the study of the spiders (Araneae) in Sushtinska Sredna Gora Mountain, Bulgaria. — Historia naturalis bulgarica, 9: 27—34.