TY - JOUR AU - Fan Chung TI - The diameter and Laplacian eigenvalues of directed graphs JO - The electronic journal of combinatorics PY - 2006 VL - 13 UR - http://geodesic.mathdoc.fr/articles/10.37236/1142/ DO - 10.37236/1142 ID - 10_37236_1142 ER -