@Article{ mar08b, author = { Martinazzi, Luca }, title = { Concentration-compactness phenomena in the higher order Liouville's equation }, journal = { J. Functional Anal. }, year = { 2009 }, volume = { 256 }, pages = { 3743-3771 }, URL = { http://cvgmt.sns.it/paper/703/ }, note = { cvgmt preprint} }