TY - JOUR AU - V. I. Gryn' TI - Joint reconstruction of the absorption coefficient and the source JO - Doklady Akademii Nauk PY - 1991 SP - 849 EP - 853 VL - 319 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1991_319_4_a16/ LA - ru ID - DAN_1991_319_4_a16 ER -