@article{JCA_2006_13_1_JCA_2006_13_1_a4,
     author = {C. Nour},
     title = {The {Bilateral} {Minimal} {Time} {Function}},
     journal = {Journal of convex analysis},
     pages = {61--8},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/JCA_2006_13_1_JCA_2006_13_1_a4/}
}