@article{lmcs:890,
    title      = {Approximation systems for functions in topological and in metric spaces},
    author     = {Dimiter Skordev},
    url        = {https://lmcs.episciences.org/890},
    doi        = {10.2168/LMCS-9(4:15)2013},
    journal    = {Logical Methods in Computer Science},
    issn       = {1860-5974},
    volume     = {Volume 9, Issue 4},
    eid        = 15,
    year       = {2013},
    month      = {Nov},
    keywords   = {Computer Science - Logic in Computer Science, Mathematics - Logic},
}