TY - JOUR AU - A. Pełczyński AU - I. Singer TI - On non-equivalent bases and conditional bases in Banach spaces JO - Studia Mathematica PY - 1964 SP - 5 EP - 25 VL - 25 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-25-1-5-25/ DO - 10.4064/sm-25-1-5-25 LA - en ID - 10_4064_sm_25_1_5_25 ER -