@article{IVM_1979_5_a9,
     author = {N. K. Smolentsev},
     title = {A weak {Riemannian} structure on a~group of diffeomorphisms},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--80},
     year = {1979},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1979_5_a9/}
}