@article{lmcs:2021,
    title      = {A Few Notes on Formal Balls},
    author     = {Jean Goubault-Larrecq and Kok Min Ng},
    url        = {https://lmcs.episciences.org/2021},
    doi        = {10.23638/LMCS-13(4:18)2017},
    journal    = {Logical Methods in Computer Science},
    issn       = {1860-5974},
    volume     = {Volume 13, Issue 4},
    eid        = 18,
    year       = {2017},
    month      = {Nov},
    keywords   = {Mathematics - General Topology, 54E99},
}