%0 Journal Article %A Girouard, Alexandre %T Fundamental Tone, Concentration of Density, and Conformal Degeneration on Surfaces %J Canadian journal of mathematics %D 2009 %P 548-565 %V 61 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-029-1/ %R 10.4153/CJM-2009-029-1 %F 10_4153_CJM_2009_029_1