relation: http://acta.bibl.u-szeged.hu/15067/ title: On approximation by Euler means of orthogonal series creator: Schwinn Hans date: 1985 type: Cikk, tanulmány, mű type: NonPeerReviewed format: part language: hu identifier: http://acta.bibl.u-szeged.hu/15067/1/math_049_283-294.pdf identifier: Schwinn Hans: On approximation by Euler means of orthogonal series. In: Acta scientiarum mathematicarum, (49). pp. 283-294. (1985) relation: http://www.acta.hu language: eng