
Abadjiev, S., 2000. An Atlas of the Distribution of the Butterflies in Bulgaria (Lepidoptera: Hesperioidea & Papilionoidea). Pensoft Publishers, Sofia—Moscow, 335 pp.
Abadjiev, S., 2000. The problem name canidiaformis Drenowski and a proposed solution (Lepidoptera: Pieridae). — SHILAP Revta. lepid. 28 (111): 335—340.
Abadjiev, S., 2001. Description of a new subspecies of Erebia cassioides (Reiner & Hohenwarth, 1792) (Lepidoptera: Nymphalidae: Satyrinae) from Bulgaria. — Revue suisse de Zoologie 108 (1): 57—64.
Abadjiev, S., 2002. Types of Balkan butterflies in the collection of The Natural History Museum, London (Lepidoptera: Hesperioidea & Papilionoidea). — Neue Entomologische Nachrichten 53: 3—53.
Abadjiev, S., 2005. An annotated catalog of types of Neotropical Pierinae (Lepidoptera: Pieridae) in the collection of the National Museum of Natural History, Smithsonian Institution, Washington DC. — Zootaxa 1022: 1—35. [PDF]
Abadjiev, S., 2005. The primary types of Neotropical Pierinae in the collection of Laboratoire d’Entomologie, Muséum National d’Histoire Naturelle, Paris (Lepidoptera, Papilionoidea, Pieridae). — Atalanta 36 (1/2): 127—139, col. pls 3—5.
Abadjiev, S., 2006. Types of Neotropical Pierinae in the collection of Department of Entomology, Natural History Museum, London (Lepidoptera: Pieridae). — Zootaxa 1143: 1—218. [PDF]
Abadjiev, S. & Beshkov, S., 2007. Prime Butterfly Areas in Bulgaria. Pensoft Publishers, Sofia—Moscow, 222 pp.
Bálint, Z. & Abadjiev, S., 2006. An annotated list of Imre Frivaldszky’s publications and the species- and infraspecies-group names he proposed for plants and animals (Regnum Plantare and Animale). — Annls hist.-nat. Mus. natn. hung. 98: 185—280. [PDF]
Schmitt, T., Rákosy, L., Abadjiev, S. & Müller, P., 2007. Multiple differentiation centres of a non-Mediterranean butterfly species in south-eastern Europe. — Journal of Biogeography 34 (6): 939—950. [PDF]