%0 Journal Article
%A Ishida, Tomohiko
%T Second cohomology classes of the group of $C^1$-flat diffeomorphisms
%J Annales de l'Institut Fourier
%D 2012
%P 77-85
%V 62
%N 1
%I Association des Annales de l’institut Fourier
%U https://aif.centre-mersenne.org/articles/10.5802/aif.2699/
%R 10.5802/aif.2699
%G en
%F AIF_2012__62_1_77_0