@article{10_4064_cm_48_1_89_91,
     author = {Iwo Labuda and R. Daniel Mauldin},
     title = {Problem 24 of the {"Scottish} book'' concerning additive functionals},
     journal = {Colloquium Mathematicum},
     pages = {89--91},
     publisher = {mathdoc},
     volume = {48},
     number = {1},
     year = {1984},
     doi = {10.4064/cm-48-1-89-91},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-48-1-89-91/}
}