%0 Journal Article %@ 0001-6969 %A Schwinn Hans %D 1995 %F acta:15542 %J Acta scientiarum mathematicarum %K Matematika %N 3-4 %P 609-618 %T On strong approximation of orthogonal series %U http://acta.bibl.u-szeged.hu/15542/ %V 60 %Z Bibliogr.: p. 617-618.; Abstract