{{cite journal | last1=Govindasamy | first1=K. | author2=T. Chutia | author3=M. Rahman | author4=M. K. Kalita | author5=R. Dewry | year=2021 | title=ECONOMIC EVALUATION OF BOAR SEMEN PRODUCTION UNIT FOR SMALLHOLDER PIG PRODUCTION SYSTEM | journal=Journal of Animal and Plant Sciences | volume=31 | issue=4 | pages=1212-1216 | doi=10.36899/JAPS.2021.4.0320 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=AS-19-0101}}