TY - JOUR TI - On a generalization of the concept of orthogonality T3 - Acta scientiarum mathematicarum AU - Schipp Ferenc PY - 1975 LA - English SN - 0001-6969 UR - http://acta.bibl.u-szeged.hu/14540/1/math_037_fasc_003_004_279-285.pdf ER -