TY - JOUR AU - B. Kanguzhin AU - L. Zhapsarbaeva AU - Zh. Madibaiuly TI - Lagrange formula for differential operators and self-adjoint restrictions of the maximal operator on a tree JO - Eurasian mathematical journal PY - 2019 SP - 16 EP - 29 VL - 10 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EMJ_2019_10_1_a2/ LA - en ID - EMJ_2019_10_1_a2 ER -