@article{JCA_2005_12_1_JCA_2005_12_1_a12,
     author = {R. Monti and M. Rickly},
     title = {Geodetically {Convex} {Sets} in the {Heisenberg} {Group}},
     journal = {Journal of convex analysis},
     pages = {187--196},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/JCA_2005_12_1_JCA_2005_12_1_a12/}
}