1. Hirschenhauser K et al. 2000. Seasonal relationship between plasma and fecal testosterone in response to GnRH in domestic ganders. Gen. Comp. Endocrinol. 118(2):262-272.
2. Acs I Bodi L Kozak J Karsai M 1995. Effect of feed consumption and changes of body weight on the egg production of breeding geese during the spring laying period. Proceedings of the 10th European Symposium on Waterfowl Halle Saale Germany 116-119.
3. Alexandrov M Alexandrova R Alexandrov I Zacharieva S Lasarova S Doumanova L Peshev R Donev T 1999. Fluorescent and electron-microscopy immunoassays employing polyclonal and monoclonal antibodies for detection of goose parvovirus infection. Journal of Virological Methods 79(1):21-32; 28 ref.
4. Anderson L Heinke C Hagan S Guise K 1985. Detection of cellular oncogene sequences in six avian species. Poultry Science 64(suppl.1):55.
5. Apitz M Wagner KU Saar W 1995. Karyotype characteristics in domestic ducks and geese. Proceedings of the 10th European Symposium on Waterfowl Halle (Saale) Germany 465-472.