@article{AFM_2008_33_1_a17,
     author = {Riku Kl\'en},
     title = {Local convexity properties of j-metric balls},
     journal = {Annales Fennici Mathematici},
     pages = {281--293},
     year = {2008},
     volume = {33},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2008_33_1_a17/}
}