@article{JCA_2016_23_3_JCA_2016_23_3_a5,
     author = {T. Jahn and H. Martini and C. Richter},
     title = {Bi- and {Multifocal} {Curves} and {Surfaces} for {Gauges}},
     journal = {Journal of convex analysis},
     pages = {733--774},
     year = {2016},
     volume = {23},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JCA_2016_23_3_JCA_2016_23_3_a5/}
}