@article{RM_2004_59_3_a11,
     author = {N. N. Ganikhodzhaev and D. V. Zanin},
     title = {On a necessary condition for the ergodicity of quadratic operators
},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {571--572},
     publisher = {mathdoc},
     volume = {59},
     number = {3},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2004_59_3_a11/}
}