@article{IIGUM_2019_29_a10,
     author = {A. I. Kozhanov},
     title = {Ultraparabolic equations with~operator coefficients at~the~time derivatives},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {120--137},
     publisher = {mathdoc},
     volume = {29},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2019_29_a10/}
}