@article{10_4064_ap_60_1_81_100,
     author = {Wancang Ma and David Minda},
     title = {Hyperbolically convex functions},
     journal = {Annales Polonici Mathematici},
     pages = {81--100},
     publisher = {mathdoc},
     volume = {60},
     number = {1},
     year = {1994},
     doi = {10.4064/ap-60-1-81-100},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-60-1-81-100/}
}