@article{700989,
     title = {Applications of the side approximation theorem for surfaces},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1962},
     pages = {91-95},
     mrnumber = {MR0154266},
     zbl = {0112.38603},
     url = {http://dml.mathdoc.fr/item/700989}
}

Bing, R. H. Applications of the side approximation theorem for surfaces, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1962), pp. 91-95. http://gdmltest.u-ga.fr/item/700989/