TY - CONF T1 - Symmetry and graph theory as tools for the treatment of pi-systems JO - GROUP 24 : PHYSICAL AND MATHEMATICAL ASPECTS OF SYMMETRIES PY - 2003/01/01 AU - Fowler PW ED - Gazeau JP ED - Kerner R ED - Antoine JP ED - Metens S ED - Thibon JY VL - 173 SP - 81 EP - 88 Y2 - 2024/12/22 ER -