TY - JOUR TI - On orthogonal trigonometric polynomials T3 - Acta scientiarum mathematicarum AU - Szalay István PY - 1975 LA - English SN - 0001-6969 UR - http://acta.bibl.u-szeged.hu/14541/1/math_037_fasc_003_004_287-292.pdf ER -