TY - JOUR AU - Rakesh TI - Some results on inverse obstacle problems JO - Algebra i analiz PY - 1996 SP - 157 EP - 161 VL - 8 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_1996_8_2_a8/ LA - en ID - AA_1996_8_2_a8 ER -