基于R聚类和变异系数的原油水上过驳风险评价指标体系
崔文罡,范厚明,马梦知
Risk evaluation index system of ship-to-ship crude oil transfer based on R clustering 
CUI Wen-gang,FAN Hou-ming,MA Meng-zhi
大连海事大学学报 . 2017, (3): 31 -37 .  DOI: 10.16411/j.cnki.issn1006-7736.2017.03.006