@article{TSP_2009_27_27_a2,
     author = {A. S. Demidov and A. S. Kochurov and A. Yu. Popov},
     title = {To the problem of the recovery of nonlinearities in equations of mathematical physics},
     journal = {Trudy Seminara im. I.G. Petrovskogo},
     pages = {74--123},
     publisher = {mathdoc},
     volume = {27},
     number = {27},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TSP_2009_27_27_a2/}
}