中国科学院数学与系统科学研究院期刊网
ASYMPTOTIC ERROR EXPANSION AND EXTRAPOLATION OF THE NYSTROM METHOD FOR TWO-DIMENSIONAL FREDHOLM INTEGRAL EQUATIONS
HAN GUOQIANG, ZHANG LIQING
Acta Mathematicae Applicatae Sinica . 1995, (2): 218 -224 .  DOI: 10.12387/C1995028