{{cite journal | last1=Park | first1=H. S. | author2=K. C. Choi | author3=J. H. Kim | author4=M. J. So | author5=S.-H. Lee | author6=K.-W. Lee | year=2016 | title=DISCRIMINATION AND QUANTIFICATION BETWEEN ANNUAL RYEGRASS AND PERENNIAL RYEGRASS SEEDS BY NEAR-INFRARED SPECTROSCOPY | journal=Journal of Animal and Plant Sciences | volume=26 | issue=5 | pages=1278-1283 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2016-JAPS-167}}