@article{SM_1992_73_1_a4,
     author = {B. V. Loginov and N. A. Sidorov},
     title = {Group symmetry of the {Lyapunov{\textendash}Schmidt} branching equation and iterative methods in the problem of a~bifurcation point},
     journal = {Sbornik. Mathematics},
     pages = {67--77},
     year = {1992},
     volume = {73},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1992_73_1_a4/}
}