@article{MZ_1966__92_170542,
     author = {William D.L. Appling},
     title = {Refinement-Unbounded {Set} {Functions} and {Absolute} {Continuity.}},
     journal = {Mathematische Zeitschrift},
     pages = {140--145},
     publisher = {mathdoc},
     volume = {92},
     year = {1966},
     zbl = {0171.30101},
     url = {http://geodesic.mathdoc.fr/item/MZ_1966__92_170542/}
}