TY - JOUR AU - B. A. Levitskii AU - V. M. Mostepanenko AU - V. M. Frolov TI - Properties of the basis functions of expansions which are invariant under the group $O(4)$ JO - Doklady Akademii Nauk PY - 1975 SP - 61 EP - 64 VL - 220 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_220_1_a14/ LA - ru ID - DAN_1975_220_1_a14 ER -