@article{JCA_2007_14_3_JCA_2007_14_3_a4,
     author = {G. Bellettini and L. Mugnai},
     title = {A {Varifolds} {Representation} of the {Relaxed} {Elastica} {Functional}},
     journal = {Journal of convex analysis},
     pages = {543--564},
     year = {2007},
     volume = {14},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JCA_2007_14_3_JCA_2007_14_3_a4/}
}