1. On the study of some productive characters in geese under the conditions of large scale production;Balko;Vedecke Prace Vyskumny Ustav Pre Chov Hydiny,1967
2. Investigation of the egg laying curve of geese in relation to annual egg production;Bielinski;Postepy Droviarstura,1970
3. The control of avian reproductive cycles;Farner,1967
4. Production of repeated gonadal, fat, and molt cycles within one year in the Junco and White-crowned Sparrow by manipulation of day length;Wolfson;J. Exp. Zool.,1954