@article{JCA_2003_10_1_JCA_2003_10_1_a3,
     author = {K.-I. Mitani and K.-S. Saito and T. Suzuki},
     title = {Smoothness of {Absolute} {Norms} on {C\protect\textsuperscript{n}}},
     journal = {Journal of convex analysis},
     pages = {089--107},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/JCA_2003_10_1_JCA_2003_10_1_a3/}
}