1. The correlation of milk-yield, fat percentage and butter-fat production and their consequences for the testing and breeding of the dairy-cattle;Krizenecky,1934
2. The energy basis of measuring milk yield in dairy cows;Gaines;Ill. Agr. Exp. Sta. Bull.,1928
3. Interrelations of milk-fat, milk-protein and milk-energy yield;Gaines;J. Dairy Sc.,1938