@article{SM_1974_24_2_a0,
     author = {V. V. Kucherenko},
     title = {Asymptotic solutions of equations with complex characteristics},
     journal = {Sbornik. Mathematics},
     pages = {159--207},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1974_24_2_a0/}
}