TY - JOUR AU - Ivan Gutman AU - Elías Gudiño AU - Domingo Quiroz TI - Upper bound for the energy of graphs with fixed second and fourth spectral moments JO - Kragujevac Journal of Mathematics PY - 2009 SP - 27 VL - 32 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KJM_2009_32_a2/ LA - en ID - KJM_2009_32_a2 ER -