R. A. MEGE, S. H. NASUTION, N. KUSUMORINI, and W. MANALU, “Growth and Development of the Uterus and Placenta of Superovulated Gilts”, HAYATI J Biosci, vol. 14, no. 1, p. 1, Dec. 2009, doi: 10.4308/hjb.14.1.1.