@article{RM_1960_15_1_a2,
     author = {L. G\r{a}rding},
     title = {Some trends and problems in linear partial differential equations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_1_a2/}
}