@article{MAT_1973_17_2_a3,
     author = {Hermann Flaschka and Gilbert Strang},
     title = {The correctness of the {Cauchy} problem},
     journal = {Matematika},
     pages = {74--97},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1973_17_2_a3/}
}