@article{10_4064_sm_105_1_1_11,
     author = {Stanis{\l}aw Kry\'nski},
     title = {Metrically convex functions in normed spaces},
     journal = {Studia Mathematica},
     pages = {1--11},
     year = {1993},
     volume = {105},
     number = {1},
     doi = {10.4064/sm-105-1-1-11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-105-1-1-11/}
}