@article{JCA_2014_21_3_JCA_2014_21_3_a1,
     author = {A. N. Zachos},
     title = {Minimal {Systolic} {Circles}},
     journal = {Journal of convex analysis},
     pages = {619--65},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/JCA_2014_21_3_JCA_2014_21_3_a1/}
}