@article{AUM_2020_74_1_a0,
     author = {Goebel, Kazimierz},
     title = {Remarks on retracting balls on spherical caps in \(c_{0}\), \(c\), \(l^{\infty }\) spaces},
     journal = {Annales Universitatis Mariae Curie-Sk{\l}odowska. Mathematica },
     pages = {45--55},
     publisher = {mathdoc},
     volume = {74},
     number = {1},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUM_2020_74_1_a0/}
}