B. BALAMURALIKRISHNAN, J. H. PARK, and I. H. KIM, “Interactive effects of weaning age and creep feed on the performance of sows and their piglets”, Indian J of Anim Sci, vol. 87, no. 10, pp. 1259–1263, Oct. 2017, doi: 10.56093/ijans.v87i10.75299.