TY - JOUR AU - H. A. Kierstead AU - W. T. Trotter TI - Competitive colorings of oriented graphs JO - The electronic journal of combinatorics PY - 2001 VL - 8 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.37236/1611/ DO - 10.37236/1611 ID - 10_37236_1611 ER -