TY - JOUR AU - D. A. Tursunov AU - U. Z. Erkebaev TI - Asymptotic expansion of the solution of a perturbed elliptic equation when the limit equation has singular points JO - Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika PY - 2015 SP - 26 EP - 34 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VTGU_2015_3_a3/ LA - ru ID - VTGU_2015_3_a3 ER -