@article{10_4064_ap_71_3_273_285,
     author = {William Ma and David Minda},
     title = {Hyperbolically convex functions {II}},
     journal = {Annales Polonici Mathematici},
     pages = {273--285},
     publisher = {mathdoc},
     volume = {71},
     number = {3},
     year = {1999},
     doi = {10.4064/ap-71-3-273-285},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-71-3-273-285/}
}