@article{CMUC_1991__32_2_a5,
     author = {Kilmer, Shelby J. and Kozƚowski, Wojciech M. and Lewicki, Grzegorz},
     title = {Sigma order continuity and best approximation in $L_\varrho$-spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {241--250},
     publisher = {mathdoc},
     volume = {32},
     number = {2},
     year = {1991},
     mrnumber = {1137785},
     zbl = {0754.41017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1991__32_2_a5/}
}