@article{GDZPPN000363812, title = {A Nonuniform Matroid Which Violates the Isotopy Conjecture.}, journal = {Discrete \& computational geometry}, volume = {4}, year = {1989}, pages = {1-2}, zbl = {0657.05019}, url = {http://dml.mathdoc.fr/item/GDZPPN000363812} }
White, N. L. A Nonuniform Matroid Which Violates the Isotopy Conjecture.. Discrete & computational geometry, Tome 4 (1989) pp. 1-2. http://gdmltest.u-ga.fr/item/GDZPPN000363812/