@article{VSGTU_2019_23_2_a10,
     author = {L. L. Ryskina},
     title = {On singular solutions of a multidimensional differential 
},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {394--401},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2019_23_2_a10/}
}