共 11 条
[1]
DZJADYK VK, 1975, T MAT I STEKLOV, V134, P63
[2]
JOHNEN H, 1977, LECTURE NOTES MATH, P119
[4]
JONSSON A, 1976, 19 C MATH SOC JAN BO, P429
[5]
Nikol'skii S. M., 1969, APPROXIMATION FUNCTI
[6]
Stein E. M., 1970, SINGULAR INTEGRAL DI
[7]
WALLIN H, 1978, MULTIVARIATE APPROXI
[8]
Whitney H, 1934, T AM MATH SOC, V36, P63, DOI 10.2307/1989708
[10]
ZYGMUND A, 1968, TRIGONOMETRIC SERIES