@article{JCA_2013_20_3_JCA_2013_20_3_a1,
     author = {S. Masnou and G. Nardi},
     title = {A {Coarea-Type} {Formula} for the {Relaxation} of a {Generalized} {Elastica} {Functional}},
     journal = {Journal of convex analysis},
     pages = {617--653},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2013},
     url = {http://geodesic.mathdoc.fr/item/JCA_2013_20_3_JCA_2013_20_3_a1/}
}