by Namba, K., Morinaga Milk Industry Co. Ltd., Zama, Kanagawa (Japan). Nutritional Science Lab, Hatano, M, Yaeshima, T, Takase, M, Suzuki, K
Published in Bioscience, biotechnology, and biochemistry (2010)

by Curca, D., University of Agricultural Sciences and Veterinary Medicine, Bucharest (Romania), Lionide, A, Samarineanu, M
Published in Stiinta Agricola (2011)

by Resanovic, R., Fakultet veterinarske medicine, Beograd (Serbia), Rasic, Z., Veterinarski specijalisticki institut, Jagodina (Serbia), Kureljusic, B., Naucni institut za veterinarstvo Srbije, Beograd (Serbia), Vucicevic, I., Naucni institut za veterinarstvo Srbije, Beograd (Serbia)
Published in Zivinarstvo (Serbia) (2008)

by Bucknor, A.J.E., Animal Research Institute (Ghana Academy of Sciences), Achimota
Published in Ghana journal of science (1967)