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Gueorguiev B., Doychev D., Ovcharov D. 2008. Cucujidae (Coleoptera: Cucujoidea) - a new family to the fauna of Bulgaria. - Historia naturalis bulgarica, 19: 93-97.
Doychev D., D. Ovcharov. 2008. First report of Thanasimus femoralis (Zetterstedt) (Coleoptera, Cleridae) for the Bulgarian fauna. - Acta Zoologica Bulgarica, Suppl. 2: 331-332.
Ovcharov D., D. Doychev. 2007. First report of Megastigmus wachtli Seitner (Hymenoptera, Torymidae) in Bulgaria. - Forest science, ¦ 2: 89 - 96.
Ovcharov D., D. Doychev, P. Dimitrova. 2007. Insects Feeding on The Sweet Chestnut (Castanea sativa Mill.) in Bulgaria. In: Bratanova-Doncheva S. (ed.). Sustainable Management of Sweet Chestnut Ecosystems - CAST Bul. Reports presented at the I-st Balkan Regional Workshop, 2nd - 5th November, 2005, Blagoevgrad, Bulgaria: 173 - 182.
Rosnev B., P. Mirchev, G. Georgiev, P. Petkov, Y. Naydenov, G. Tsankov, D. Ovcharov, A. Pencheva, S. Bencheva, S. Mirchev, D. Doychev, M. Georgieva,H. Tomovski, M. Matova,. 2007. Manual of Forest Protection. Part II. Methods of observation, signalization, forest pathology investigation, prognostication and organization of forest pest and diseases management. - Obrazovanie i nauka, Sofia, 128 p. (In Bulgarian).
Takov D., D. Doychev, R. Wegensteiner, D. Pilarska. 2007. Study of Bark Beetle (Coleoptera, Scolytidae) Pathogens from Coniferous stands in Bulgaria. - Acta Zoologica Bulgarica, 59 (1): 87 - 96.
Draganova S., D. Takov, D. Doychev. 2007. Bioassays with Isolates of Beauveria bassiana (Bals.) Vuill. and Paecilomyces farinosus (Holm.) Brown & Smith Against Ips sexdentatus Boerner and Ips acuminatus Gyll. (Coleoptera: Scolytidae). - Plant Science, 44: 24 - 28.
Doychev D., D. Ovcharov. 2006. Bark Beetles (Coleoptera, Curculionidae, Scolytinae) in the Bulgarian Part of the Rhodopes. - In: Beron P. (ed) Biodiversity of Bulgaria. 3. Biodiversity of Western Rhodopes (Bulgaria and Greece) I. Pensoft & Nat. Mus. Natur. Hist., Sofia, 365 - 381.
Georgiev G., E. Migliaccio, D. Doychev. 2006. Longhorn beetles (Coleoptera: Cerambycidae) in Western Rhodopes (Bulgaria) - In: Beron P. (ed) Biodiversity of Bulgaria. 3. Biodiversity of Western Rhodopes (Bulgaria and Greece) I. Pensoft & Nat. Mus. Natur. Hist., Sofia, 347 - 360.
Doychev D., N. Balevski. 2006. New Braconid Parasitoid Species from the Bulgarian Fauna (Hymenoptera: Braconidae). - Acta Entomologica Bulgarica, vol. 12, ¦ 3,4: 5 - 10 (In Bulgarian with English abstract).
Doychev D., D. Ovcharov. 2006. First report of Phloeosinus henschi Reitt. and Xyleborus eurygraphus (Ratz.) (Scolytidae, Coleoptera) for the Bulgarian fauna. - Acta Entomologica Bulgarica, vol. 12, ¦ 3, 4: 11 - 14 (In Bulgarian with English abstract).
Doychev D., D. Ovcharov, G. Georgiev. 2006. Notes on distribution and ecology of Icosium tomentosum atticum Ganglbauer (Coleoptera: Cerambycidae) in Bulgaria. - Forest science, ¦. 3: 117 - 120.
Rosnev B., P. Mirchev, G. Georgiev, P. Petkov, Y. Naydenov, G. Tsankov, D. Ovcharov, S. Mirchev, A. Pencheva, D. Doychev, M. Matova, M. Georgieva. 2006. Manual of Forest Protection. Part I. Diseases, Insects and Other Pests and Damages on Forest Trees and Shrubs. - Obrazovanie i nauka, Sofia, 192 p. (In Bulgarian).
Ovcharov D., D. Doychev. 2006. Insect Pests in Pine Stands Neighbouring Burnt Forest Areas. - Forest science, ¦. 1: 93 - 103 (In Bulgarian with English abstract).
Doychev D., G. Georgiev. 2006. Poecilium glabratum (Charpentier) (Coleoptera: Cerambycidae) - a New Phytophage of Cupressus sempervirens L. in Bulgaria. - Forest science, ¦. 1: 111 - 114.
Georgiev G., N. Simov, A. Stojanova, D. Doychev. 2005. New and Interesting Records of Longhorn Beetles (Coleoptera: Cerambycidae) in Some Bulgarian Mountains. - Acta Zoologica Bulgarica, 57 (2): 131 - 138.
Georgiev G., D. Doychev, E. Migliaccio. 2005. Studies on Cerambycid Fauna (Coleoptera: Cerambycidae) in Western Rhodopes in Bulgaria. - Forest science, ¦. 2: 81 - 90.
Ovcharov D., D. Doychev. 2005. Changes in the Entomofauna in Burned Coniferous Plantation Areas. - In: Special Nature Reserve The Deliblato Sands. Proceedings VII: 229 - 234.
Doychev D., D. Ovcharov. 2004. New Data about the Entomofauna of the Chinese Chestnut (Castanea mollissima Bl.) in Bulgaria. - Forestry ideas, 31 (3): 58 - 63 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev. 2004. Differences in the Attacks by Insect Pests on the Chestnut (Castanea sativa Mill.) in Belasitsa Mountain Depending on the Age of the Forests. - Forestry ideas, ¦ 1 (29): 121 - 127 (In Bulgarian with English abstract).
Doychev D., G. Georgiev. 2004. New and Rare Longhorn Beetles (Coleoptera: Cerambycidae) in Bulgaria. - Acta Zoologica Bulgarica, 56 (2): 167 - 174.
Ovcharov D., D. Doychev. 2003. Weevils from the Genus Magdalis Germ. (Curculionidae, Coleoptera) Pest for the Young Seedlings. - Proceedings of Scientific Papers: 75 Years of the Forest Research Institute of Bulgarian Academy of Sciences. Sofia, vol.2: 211 - 216 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev, D. Kuhtev. 2003. An Atlas on the Pest Insects in Burnt Forests Areas. Sofia, Geosoft, 48 p. (In Bulgarian).
Doychev D., D. Kuhtev. 2003. Three New Bark Beetles (Scolytidae, Coleoptera) for the Bulgarian Fauna. - Proceding Scientific Papers International Scientific Conference "50 Years University of Forestry", Session "Plant Protection", Sofia: 98 - 100 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev, P. Dimitrova, N. Zafirov. 2003. Xylophagous insects from the order Coleoptera (Insecta) in the pine plantations on non-typical habitats in the "Petrohan" experimental and educational forest enterprise. Part II. - Forestry ideas, ¦ 1-4 (28): 97 - 104 (In Bulgarian with English abstract).
Doychev D., D. Ovcharov. 2002. Phytophagous from Coleoptera (Insecta) Order Presented in Ostritsa Botanical Reserve. - Journal of Balkan Ecology, vol. 5, ¦ 3: 244 - 252.
Ovcharov D., D. Doychev. 2002. Conclusions and recommendations by forest pathologycal investigations in destroyed by fire forest areas. - In: Multifunctional, close-to-nature and sustainable forest management in Bulgaria. Bulgarian-Swiss Forestry Programme, Sylvica Foundation, Sofia, 117 - 129 (In Bulgarian).
Ovcharov D., D. Doychev. 2002. Forest fires and phytophagous insects. Sofia, PSSE. 32 p. (In Bulgarian).
Ovcharov D., D. Doychev. 2003. Stem Pests on Spruce from Order Coleoptera (Insecta) in the Region of "Jundola" Experimental and Educational Forest Enterprise. - Forestry ideas, ¦ 3-4: 69 - 75 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev. 2001. Insect pests from order Coleoptera in recently created pine plantation on non-typical habitats. - In: Third Balkan Scientific Conference, vol. III., Sofia: 119 - 125 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev. 2001. Xylophagous insects from the order Coleoptera in the pine plantations on non-typical habitats in the "Petrohan" experimental and educational forest enterprise. - Forestry ideas, 1 - 4: 64 - 75 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev, A. Todorov. 2000. Differences in attack from leafchewing pests (famillies Tortricidae and Geometridae, order Lepidoptera) by some Quercus species. - In: 75 years higher forestry education in Bulgaria: 269 - 278 (In Bulgarian with English abstract).
Ovcharov D., D. Doychev, A. Todorov. 2000. Differences in resistance of some Quercus species to attacks of insect pests. - In: Forestry and biodiversity. Lowland forests of Northeastern Bulgaria. Bulgarian - Swiss Project "Close-to-Nature and sustainble management of the forests": 38 - 43 (In Bulgarian).