Shi, Yingguang On problem 24 of P. Turán. II. (English) Zbl 0777.41002 J. Math. Res. Expo. 13, No. 1, 55-60 (1993). MSC: 41A05 41A20 42C05 × Cite Format Result Cite Review PDF
Shi, Yingguang Uniqueness of best L approximation for continuous functions. (English) Zbl 0709.41022 J. Math. Res. Expo. 8, No. 2, 261-265 (1988). Reviewer: D.Wulbert MSC: 41A50 41A52 × Cite Format Result Cite Review PDF