TY - JOUR AU - Leo Jonker AU - David Rand TI - Bifurcations in One Dimension. II. A Versal Model for Bifurcations. JO - Inventiones mathematicae PY - 1981 SP - 1 EP - 16 VL - 63 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1981__63_142787/ ID - IM_1981__63_142787 ER -