@article{DAN_1961_137_2_a4,
     author = {Yu. L. Daletskii},
     title = {Spatio-temporal integrals related to some differential equations and systems},
     journal = {Doklady Akademii Nauk},
     pages = {268--271},
     year = {1961},
     volume = {137},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_2_a4/}
}