@article{RM_1964_19_2_a23,
     author = {I. I. Danilyuk and L. V. Ovsyannikov},
     title = {Soviet-American {Symposium} on {Partial} {Differential} {Equations}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1964_19_2_a23/}
}