@article{JCA_2018_25_2_JCA_2018_25_2_a10,
     author = {S. Giuffr\`e and A. Pratelli and D. Puglisi},
     title = {Radial {Solutions} and {Free} {Boundary} of the {Elastic-Plastic} {Torsion} {Problem}},
     journal = {Journal of convex analysis},
     pages = {529--543},
     year = {2018},
     volume = {25},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2018_25_2_JCA_2018_25_2_a10/}
}