{{cite journal | last1=Carvalho | first1=F. C. A. de | author2=E. Oba | author3=L. da S. Leal | author4=J. B. Siqueira | author5=N. M. Velloso | year=2012 | title=STRUCTURAL AND ULTRASTRUCTURAL ANALYSIS OF GERM CELLS FROM OVARIES OF FETUSES OF BUFFALOES | journal=Journal of Animal and Plant Sciences | volume=22 | issue=3 | pages=301-304 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2012-JAPS-3035}}