Shi, Yingguang Constrained rational approximation. (English) Zbl 0518.41016 Chin. Ann. Math., Ser. B 5, 141-143 (1984). MSC: 41A29 41A20 41A50 41A52 × Cite Format Result Cite Review PDF
Shi, Yingguang Chebyshev approximation by linear alternating families with fixed values at nodes. (English) Zbl 0511.41032 Chin. Ann. Math., Ser. B 4, 227-230 (1983). MSC: 41A50 × Cite Format Result Cite Review PDF