@article{AA_1990_2_2_a9,
     author = {D. V. Yur'ev},
     title = {A~model of {Verma} modules over the {Virasoro} algebra},
     journal = {Algebra i analiz},
     pages = {209--226},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1990_2_2_a9/}
}