@article{CM_1969__21_3_319_0,
     author = {Mr\'owka, S.},
     title = {Extending of continuous real functions},
     journal = {Compositio Mathematica},
     pages = {319--327},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {21},
     number = {3},
     year = {1969},
     mrnumber = {254813},
     zbl = {0187.44503},
     language = {en},
     url = {http://www.numdam.org/item/CM_1969__21_3_319_0/}
}