TY - JOUR AU - Kh. A. Khachatryan TI - Solvability of some classes of nonlinear singular boundary value problems in the theory of $p$-adic open–closed strings JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2019 SP - 106 EP - 117 VL - 200 IS - 1 UR - http://geodesic.mathdoc.fr/item/TMF_2019_200_1_a5/ LA - ru ID - TMF_2019_200_1_a5 ER -