TY - JOUR AU - Johann Linhart AU - Ronald Ortner TI - On the combinatorial structure of arrangements of oriented pseudocircles JO - The electronic journal of combinatorics PY - 2004 VL - 11 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/1783/ DO - 10.37236/1783 ID - 10_37236_1783 ER -