%0 Journal Article %A Ignat, Radu %T Singularities of divergence-free vector fields with values into $S^1$ or $S^2$: Applications to micromagnetics %J Confluentes Mathematici %D 2012 %V 4 %N 3 %I World Scientific Publishing Co Pte Ltd %U http://www.numdam.org/articles/10.1142/S1793744212300012/ %R 10.1142/S1793744212300012 %G en %F CML_2012__4_3_A1_0