@article{10_4064_cm_37_1_153_157,
     author = {I. K\'atai},
     title = {On additive functions having a non-decreasing normal order},
     journal = {Colloquium Mathematicum},
     pages = {153--157},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1971},
     doi = {10.4064/cm-37-1-153-157},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-37-1-153-157/}
}