TY - JOUR AU - A. Favini TI - Perturbation methods for inverse problems related to degenerate differential equations JO - Journal of computational and engineering mathematics PY - 2014 SP - 32 EP - 44 VL - 1 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCEM_2014_1_2_a3/ LA - en ID - JCEM_2014_1_2_a3 ER -