{{cite journal | last1=Ain | first1=Qurat ul | author2=Arfan Ahmad | author3=Aftab Ahmad Anjum | author4=Mamoona Chaudhry | year=2023 | title=TRANSMISSIBILITY OF H9 SUBTYPE OF AVIAN INFLUENZA VIRUS IN VACCINATED AND NON-VACCINATED BROILER CHICKEN EXPOSED TO EXPERIMENTALLY CHALLENGED BIRDS | journal=Journal of Animal and Plant Sciences | volume=33 | issue=5 | pages=1237-1243 | doi=10.36899/JAPS.2023.5.0716 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2022-JAPS-537}}