@article{CMUC_2010__51_3_a14,
     author = {Niemiec, Piotr},
     title = {Functor of extension of $\Lambda$-isometric maps between central subsets of the unbounded {Urysohn} universal space},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {541--549},
     publisher = {mathdoc},
     volume = {51},
     number = {3},
     year = {2010},
     mrnumber = {2741886},
     zbl = {1224.54044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2010__51_3_a14/}
}