TY - JOUR AU - Michael Krivelevich TI - Sparse graphs usually have exponentially many optimal colorings JO - The electronic journal of combinatorics PY - 2002 VL - 9 UR - http://geodesic.mathdoc.fr/articles/10.37236/1643/ DO - 10.37236/1643 ID - 10_37236_1643 ER -