TY - JOUR AU - William Robinson TI - Extensions of basic sequences in Fréchet spaces JO - Studia Mathematica PY - 1973 SP - 1 EP - 14 VL - 45 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-45-1-1-14/ DO - 10.4064/sm-45-1-1-14 LA - fr ID - 10_4064_sm_45_1_1_14 ER -