@article{UFA_2019_11_4_a2,
     author = {N. N. Garif'yanov and E. V. Strezhneva},
     title = {On applications of summary equation induced by quadrilateral},
     journal = {Ufa mathematical journal},
     pages = {27--32},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2019_11_4_a2/}
}