@article{EMJ_2019_10_1_a2,
     author = {B. Kanguzhin and L. Zhapsarbaeva and Zh. Madibaiuly},
     title = {Lagrange formula for differential operators and self-adjoint restrictions of the maximal operator on a tree},
     journal = {Eurasian mathematical journal},
     pages = {16--29},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2019_10_1_a2/}
}