TY - JOUR AU - Andreas Paffenholz TI - Faces of Birkhoff polytopes JO - The electronic journal of combinatorics PY - 2015 VL - 22 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/4499/ DO - 10.37236/4499 ID - 10_37236_4499 ER -