%0 Journal Article
%A Stefan Ivanov
%A Ivan Minchev
%A Dimiter Vassilev
%T Extremals for the Sobolev inequality on the seven-dimensional quaternionic Heisenberg group and the quaternionic contact Yamabe problem
%J Journal of the European Mathematical Society
%D 2010
%P 1041-1067
%V 12
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4171/jems/222/
%R 10.4171/jems/222
%F JEMS_2010_12_4_a6