TY - JOUR AU - Yan-Quan Feng AU - Jin-Ho Kwak AU - Jin-Xin Zhou TI - Congruence classes of orientable 2-cell embeddings of bouquets of circles and dipoles JO - The electronic journal of combinatorics PY - 2010 VL - 17 UR - http://geodesic.mathdoc.fr/articles/10.37236/313/ DO - 10.37236/313 ID - 10_37236_313 ER -