@article{ASNSP_1993_4_20_4_597_0,
     author = {Ambrosio, L. and Cannarsa, P. and Soner, H. M.},
     title = {On the propagation of singularities of semi-convex functions},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {597--616},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 20},
     number = {4},
     year = {1993},
     mrnumber = {1267601},
     zbl = {0874.49041},
     language = {en},
     url = {http://www.numdam.org./item/ASNSP_1993_4_20_4_597_0/}
}