A. G.  Radchenko and Antonova, V., ?First record of Myrmica rugulososcabrinodis Karawajew (Hymenoptera, Formicidae) for Bulgaria?, Myrmecologische Nachrichten, vol. 6, no. 6, p. 21, 2004.

V.  Antonova, ? First record of the slave-maker ant Harpagoxenus sublaevis (Nylander, 1849) from Bulgaria (Hymenoptera: Formicidae)?, Myrmecological News, vol. 12, pp. 1-2, 2009.