TY - JOUR AU - Yu. M. Shirokov TI - Representation of free solutions for Schr\"odinger equations with strongly singular concentrated potentials JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1981 SP - 291 EP - 299 VL - 46 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1981_46_3_a0/ LA - ru ID - TMF_1981_46_3_a0 ER -