@article{RM_2004_59_3_a1,
     author = {A. D. Bruno},
     title = {Asymptotic behaviour and expansions of solutions of an ordinary differential equation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {429--480},
     publisher = {mathdoc},
     volume = {59},
     number = {3},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2004_59_3_a1/}
}