@article{DE_2001_37_2_a15,
     author = {F. E. Lomovtsev},
     title = {Smoothness of {Strong} {Solutions} of {Complete} {Hyperbolic} {Second-Order} {Differential} {Equations} with {Variable} {Domains} of {Operator} {Coefficients}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {276--278},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_2_a15/}
}