TY - JOUR AU - I. S. Kac TI - A remark on the article “The existence of spectral functions of generalized second order ifferential systems with boundary conditions at the singular end” JO - Sbornik. Mathematics PY - 1968 SP - 141 EP - 145 VL - 5 IS - 1 UR - http://geodesic.mathdoc.fr/item/SM_1968_5_1_a6/ LA - en ID - SM_1968_5_1_a6 ER -