@article{DAN_1969_187_1_a8,
     author = {I. S. Ovchinnikov},
     title = {Metric properties of mappings which leave certain integral functionals bounded},
     journal = {Doklady Akademii Nauk},
     pages = {36--39},
     publisher = {mathdoc},
     volume = {187},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_1_a8/}
}