{{cite journal | last1=Li | first1=Yan | author2=Quan-wei Wei | author3=Jun-rong Li | author4=Hubdar Ali Kaleri | author5=Rui-hua Huang | author6=Fang-xiong Shi | year=2014 | title=IMMUNOLOCALIZATION OF THE SMAD4 PROTEIN IN POSTNATAL PORCINE UTERUS | journal=Journal of Animal and Plant Sciences | volume=24 | issue=4 | pages=1056-1061 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2014-JAPS-153}}