TY - JOUR AU - He Chen AU - Xueliang Li TI - Color neighborhood union conditions for long heterochromatic paths in edge-colored graphs JO - The electronic journal of combinatorics PY - 2007 VL - 14 UR - http://geodesic.mathdoc.fr/articles/10.37236/995/ DO - 10.37236/995 ID - 10_37236_995 ER -