On the Optimal Approximation of Linear Functionals in Spaces of Bivariate Functions
1971 ◽
Vol 8
(1)
◽
pp. 115-126
◽
1972 ◽
Vol 5
(1)
◽
pp. 77-96
◽
1976 ◽
Vol 2
(4)
◽
pp. 267-272
◽
Keyword(s):
Keyword(s):
1973 ◽
Vol s2-7
(1)
◽
pp. 19-30
◽