TY - JOUR AU - Stefan Grünewald AU - Peter J. Humphries AU - Charles Semple TI - Quartet compatibility and the quartet graph JO - The electronic journal of combinatorics PY - 2008 VL - 15 UR - http://geodesic.mathdoc.fr/articles/10.37236/827/ DO - 10.37236/827 ID - 10_37236_827 ER -