@Article{ giamuc04, author = { Giaquinta, Mariano and Mucci, Domenico }, title = { Density results for the $ W^{1/2}$ energy of maps into a manifold }, journal = { Mathematische Zeitschrift }, year = { 2005 }, volume = { 251 }, pages = { 535-549 }, URL = { http://cvgmt.sns.it/paper/539/ }, note = { cvgmt preprint} }