@article{CRMATH_2003__336_1_47_0,
     author = {Langevin, R\'emi and Solanes, Gil},
     title = {On bounds for total absolute curvature of surfaces in hyperbolic 3-space},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {47--50},
     publisher = {Elsevier},
     volume = {336},
     number = {1},
     year = {2003},
     doi = {10.1016/S1631-073X(02)00003-1},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/S1631-073X(02)00003-1/}
}