TY - JOUR AU - Koster, Arie M. C. A. AU - Wagler, Annegret K. TI - Comparing imperfection ratio and imperfection index for graph classes JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2008 SP - 485 EP - 500 VL - 42 IS - 4 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro:2008030/ DO - 10.1051/ro:2008030 LA - en ID - RO_2008__42_4_485_0 ER -