共 11 条
[1]
Boor C., 1973, J APPROXIMATION THEO, V8, P19
[2]
Butzer P.L., 1967, SEMIGROUPS OPERATORS
[3]
Butzer P. L., 1969, AEQUATIONES MATH, V3, P170, DOI 10.1007/BF01817511
[4]
BUTZER PL, 1969, ABSTRACT SPACES APPR, V10
[5]
Lions J.-L., 1965, PROBLEMES LIMITES EQ
[6]
Morrey C. B., 1966, MULTIPLE INTEGRALS C, V130
[7]
MUNTEANU MJ, TO BE PUBLISHED
[8]
Peetre J., 1968, NOTAS MATEMATICA, V39
[10]
SCHERER K, 1972, P INT C CONSTRUCTIVE, P277