1. Changes in plumage color and patterns in Polbar breed chicks (Polish conservative breed) during their first weeks after hatching;Gryzinska;Eur. Poult. Sci.,2014
2. Masui, K., and Hashimoto, J.J.S.B.C. (1933). Sexing Baby Chicks, Journal Printing Co., Limited.
3. Research on Feather Rate and Feather Type of Chicken in Different Strains and Their Offspring;Li;J. Sichuan Agric. Univ.,1988
4. Crossing-over involving three sex-linked genes in chickens;Serebrovsky;Am. Nat.,1922
5. Inheritance of rate of feathering in poultry;Warren;J. Hered.,1925