ACTA MATHEMATICA SINICA-ENGLISH SERIES, vol. 24, no. 1, page. 75 - 86, 2008-01
CHINESE ANNALS OF MATHEMATICS SERIES B, vol. 25, no. 4, page. 493 - 506, 2004-10
APPLIED MATHEMATICS AND COMPUTATION, vol. 256, page. 786 - 807, 2015-04-01