%0 Journal Article %A Bogdan Georgiev %A Mayukh Mukherjee %T On maximizing the fundamental frequency of the complement of an obstacle %J Comptes Rendus. Mathématique %D 2018 %P 406-411 %V 356 %N 4 %I Elsevier %R 10.1016/j.crma.2018.01.018 %G en %F CRMATH_2018__356_4_406_0