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Shishiniova, M., R. Bekchiev, 2004. Research on the impact of autotransport pollution on the Carabidae life forms (Coleoptera, Carabidae). Ann. Univ. Sofia, Zool., v. 95, 4.
Bekchiev R., M. Shishiniova. 2007. A Contribution to the Pselaphinae Fauna (Coleoptera: Staphylinidae) of the Vitosha Mountain. — Acta zoologica bulgarica, 59 (1): 33—39. [PDF]
Hlavac P., R. Bekchiev, J. Ruzicka, T. Lackner. 2007. Contribution to the knowledge of myrmecophilous beetles (Coleoptera) of Bulgaria. — Acta Soc. Zool. Bohem. 71: 131—136. [PDF]
Besuchet C., R. Bekchiev. 2007. Description d’un nouveau Batrisodes de la Bulgarie (Coleoptera, Staphylinidae, Pselaphinae). — Historia naturalis bulgarica, 18: 75—80. [PDF]
Bekchiev R., P. Hlavac, 2007. 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]
Bekchiev R. 2008. The subfamily Pselaphinae (Coleoptera: Staphylinidae) of Southwestern Bulgaria I. — Historia naturalis bulgarica, 19: 51—71. [PDF]
Bekchiev R. 2007. Faunistical research on Pselaphinae fauna (Coleoptera: Staphylinidae) in several regions of South-West Bulgaria — PhD thesis (in Bulgarian). [PDF]
Gueorguiev, B., Bekchiev, R. 2009. A contribution to the coleopteran fauna of Bulgaria (Insecta: Coleoptera). — Acta zoologica bulgarica, 61 (1): 39—44. [PDF]
Bekchiev R. 2010. New data for Omoglymmius germari (Ganglbauer, 1892) (Rhysodidae: Coleoptera) in Bulgaria. — ZooNotes, 11: 1—3. [PDF]
Bekchiev R. 2010. Note on Pselaphinae (Coleoptera: Staphylinidae) Fauna of Turkey (European part). — Acta entomologica slovenica, 18 (1): 47—52.
Guéorguiev, B, Bekchiev, R., Chehlarov, E., Hristovski, S., Prelik, D., Cvetkovska-Gorgievska, A. 2010. New Coleoptera (Insecta) Species from FYRepublic of Macedonia. — Acta zool. bulg., 62 (3): 363—365. [PDF]
Bekchiev, R., Zlatkov, B. 2010. On the distribution of Propomacrus bimucronatus (Pallas, 1781) (Col.: Euchiridae) in Bulgaria. — Entomologist’s Rec. J. Var., 122 (6): 274—276. [PDF]
Bekchiev, R. 2010. Description of the second species of the genus Taiwanophodes Hlavác, 2002 (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam. — Russian Entomol. J., 19 (3): 183—185.
Bekchiev R. 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.