@article{IM2_2010_74_6_a2,
     author = {M. V. Karasev and E. M. Novikova},
     title = {Algebra and quantum geometry of multifrequency resonance},
     journal = {Izvestiya. Mathematics},
     pages = {1155--1204},
     year = {2010},
     volume = {74},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2010_74_6_a2/}
}