@article{DAN_1976_230_3_a17,
     author = {Ya. B. Zel'dovich},
     title = {The theory of perturbations of equations, possessing an invariance group, as exemplified by flame propagation},
     journal = {Doklady Akademii Nauk},
     pages = {567--569},
     publisher = {mathdoc},
     volume = {230},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_230_3_a17/}
}