{{cite journal | last1=Sevim | first1=Ömer | author2=Ahmet G. Önol | year=2019 | title=SUPPLEMENTAL SLOW-RELEASE UREA AND NON-STRUCTURAL CARBOHYDRATES: EFFECT ON DIGESTIBILITY AND SOME RUMEN PARAMETERS OF SHEEP AND GOATS | journal=Journal of Animal and Plant Sciences | volume=29 | issue=1 | pages=1-7 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=AS-17-0062}}