TY - JOUR AU - G.M. Ziegler TI - 'What Is a Complex Matroid?' JO - Discrete & computational geometry PY - 1993 SP - 313 EP - 350 VL - 10 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DCG_1993__10_2_131278/ ID - DCG_1993__10_2_131278 ER -