TY - JOUR AU - S. Kaczmarz TI - Notes on orthogonal series I JO - Studia Mathematica PY - 1934 SP - 24 EP - 28 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-5-1-24-28/ DO - 10.4064/sm-5-1-24-28 LA - en ID - 10_4064_sm_5_1_24_28 ER -