Sexing techniques in birds. Game Bird Breeder's Gazette 232: 20-21, 1974
Sexing birds. Veterinary Record 112(19): 463, 1983
Sexing birds by laparoscopy. International Zoo Yearbook 18: 197-198, 1978
Sexing of pet birds by laparoscopy. Annales de Medecine Veterinaire 130(1): 25-32, 33-34, 1986
Application of PCR technique in sexing birds. Zhongguo Shouyi Kexue: 485-488 (Sum No 346), 2006