@article{IM2_1971_5_5_a9,
     author = {Ya. S. Bugrov},
     title = {Function spaces with mixed norm},
     journal = {Izvestiya. Mathematics },
     pages = {1145--1167},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1971_5_5_a9/}
}