中国科学院数学与系统科学研究院期刊网
THE DISCRETE OPERATOR METHOD OF TWO PHASE (OIL AND WATER) IMMISCIBLE FLOW DISPLACEMENT PROBLEM AND ITS NUMERICAL ANALYSIS
Yuan Yi-rang, Wang Wen-qia
Acta Mathematicae Applicatae Sinica . 1986, (3): 296 -308 .  DOI: 10.12387/C1986034