1. Reverse cage demonstrates striking income advantage;Bell;Poultry Dig.,1972
2. New cage designs offer higher income possibilities;Bell;Poultry Tribune,1977
3. Effects of strain, age of flock assembly, and cage arrangement on behavior and productivity in White Leghorn type chickens;Choudary;Poultry Sci.,1972
4. Climatic environment and poultry feeding in practice;Emmans,1977
5. Elson, H. A., and N. D. Overfield 1976. The effect of battery cage floor design on egg shell cracking. Page 78-89 in A.D.A.S. Gleadthorpe Poultry Booklet.