Applied Mathematics. A Journal of Chinese Universities. Series A. Gaoxiao Yingyong Shuxue Xuebao (Appl. Math. J. Chinese Univ. Ser. A) (20220101), 37, no.~1, 101-108. ISSN: 1000-4424 (print).
Applied Mathematics. A Journal of Chinese Universities. Series A. Gaoxiao Yingyong Shuxue Xuebao (Appl. Math. J. Chinese Univ. Ser. A) (20220101), 37, no.~3, 308-314. ISSN: 1000-4424 (print).