TY - JOUR AU - TvrdĂ˝, Milan TI - The normal form and the stability of solutions of a system of differential equations in the complex domain JO - Czechoslovak Mathematical Journal PY - 1970 SP - 39 EP - 73 VL - 20 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1970.100943/ DO - 10.21136/CMJ.1970.100943 LA - en ID - 10_21136_CMJ_1970_100943 ER -