@article{JCA_2012_19_3_JCA_2012_19_3_a2,
     author = {V. V. Goncharov and F. F. Pereira},
     title = {Geometric {Conditions} for {Regularity} in a {Time-Minimum} {Problem} with {Constant} {Dynamics}},
     journal = {Journal of convex analysis},
     pages = {631--669},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/JCA_2012_19_3_JCA_2012_19_3_a2/}
}