@article{10_1090_S0894_0347_03_00438_7,
     author = {Shestakov, Ivan and Umirbaev, Ualbai},
     title = {Poisson brackets and two-generated subalgebras of rings of polynomials},
     journal = {Journal of the American Mathematical Society},
     pages = {181--196},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {2004},
     doi = {10.1090/S0894-0347-03-00438-7},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-03-00438-7/}
}