TY - JOUR AU - N. L. White TI - A Nonuniform Matroid Which Violates the Isotopy Conjecture. JO - Discrete & computational geometry PY - 1989 SP - 1 EP - 2 VL - 4 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131059/ ID - DCG_1989__4_6_131059 ER -