Kitahara, Kazuaki Spaces of approximating functions with Haar-like conditions / by K. Kitahara. - Berlin etc : Spinger, 1994. - X, 110 p. ; 24 cm. - Lecture notes in mathematics 1576 . Bibl. pp. 101-110 ISBN: 3-540-57974-5 0-387-57974-5 Subjects--Topical Terms: Approximation