CONE-LOSING INDICATOR REPRESENTS DIRECTION OF CONE RETENTION TECHNIQUE
YANG Ying-xin ZHU Qiang LIU De-ming YANG Jian-zhong LIN Min SONG Dao-jie
西南石油大学学报(自然科学版) . 2002, (4): 71 -74 .  DOI: 10.3863/j.issn.1000-2634.2002.04.021