@article{DE_2003_39_3_a12,
     author = {D. P. Kostomarov},
     title = {Solution of the {Cauchy} {Problem} for an {Ultrahyperbolic} {Equation} of {Dimension} 3 by 2 and 2 by 2},
     journal = {Differencialʹnye uravneni\^a},
     pages = {393--401},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_3_a12/}
}