@Article{ BaCiDePo16, author = { Badal, Rufat and Cicalese, Marco and De Luca, Lucia and Ponsiglione, Marcello }, title = { $\Gamma$-convergence analysis of a generalized $XY$ model: fractional vortices and string defects }, journal = { Commun. Math. Phys. }, year = { 2018 }, volume = { 358 }, number = { 2 }, pages = { 705–739 }, URL = { http://cvgmt.sns.it/paper/3262/ }, note = { cvgmt preprint} }