1. Adamik P (2008) Great tit. In: Cepak J, Klvana P, Skopek J, Schropfer L, Jelinek M, Horak D, Formanek J, Zarybnicky J (eds) Czech and Slovak bird migration atlas. Aventinum, Prague, pp 473–474 In Czech with a summary in English
2. Afonso CL, Tulman ER, Lu Z, Zsak L, Kutish GF, Rock DL (2000) The genome of fowlpox virus. J Virol 74:3815–3831
3. Bejcek V, Stastny K, Hudec K (1995) The atlas of wintering birds in the Czech Republic, 1982–1985 (270pp.). H and H Publishing, Jinocany In Czech with a summary in English
4. Bolte AL, Meurer J, Kaleta EF (1999) Avian host spectrum of avipoxviruses. Avian Pathol 28:415–432
5. Boulanger D, Smith T, Skinner MA (2000) Morphogenesis and release of fowlpox virus. J Gen Virol 81:675–687