{{cite journal | last1=Eyduran | first1=E. | author2=Y. Akbas | year=2015 | title=PERFORMANCE OF SEVERAL COVARIANCE STRUCTURES WITH MISSING DATA IN REPEATED MEASURES DESIGN | journal=Journal of Animal and Plant Sciences | volume=25 | issue=6 | pages=1543-1548 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-208}}