{{cite journal | last1=Abdelkhalek | first1=A. | year=2019 | title=EXPRESSION OF TOMATO PATHOGENESIS RELATED GENES IN RESPONSE TO TOBACCO MOSAIC VIRUS | journal=Journal of Animal and Plant Sciences | volume=29 | issue=6 | pages=1596-1602 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2019-JAPS-611}}