%0 Journal Article %A Sili, Ali %T On the limit spectrum of a degenerate operator in the framework of periodic homogenization or singular perturbation problems %J Comptes Rendus. Mathématique %D 2022 %P 1-23 %V 360 %N G1 %I Académie des sciences, Paris %U http://archive.numdam.org/articles/10.5802/crmath.263/ %R 10.5802/crmath.263 %G en %F CRMATH_2022__360_G1_1_0