TY - JOUR AU - A. M. Olevskii TI - An~example of an orthonormal system of convergence in~$C$ but not in~$L^2$ JO - Sbornik. Mathematics PY - 1973 SP - 145 EP - 153 VL - 20 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1973_20_1_a7/ LA - en ID - SM_1973_20_1_a7 ER -