TY - JOUR AU - A. A. Tverskoi TI - A study of the recursiveness and authenticity of signature functions in non standard JO - Doklady Akademii Nauk PY - 1982 SP - 1325 EP - 1328 VL - 262 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1982_262_6_a10/ LA - ru ID - DAN_1982_262_6_a10 ER -