@article{VMUMM_1989_3_a6,
     author = {N. B. Medvedeva},
     title = {The first focal value for a complex monodromy singular point: the general nondegenerate case},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {25--29},
     publisher = {mathdoc},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_3_a6/}
}