@article{IM2_1972_6_1_a4,
     author = {R. S. Ismagilov},
     title = {On unitary representations of the group of diffeomorphisms of a~compact manifold},
     journal = {Izvestiya. Mathematics },
     pages = {181--209},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1972_6_1_a4/}
}