@article{MAN_1989__283_1_164528,
     author = {Zolt\'an Sasv\'ari},
     title = {Additivity of {Certain} {Functionals} and the {Construction} of {Invariant} {Integrals.}},
     journal = {Mathematische Annalen},
     pages = {573--582},
     year = {1989},
     volume = {283},
     number = {1},
     zbl = {0647.28008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1989__283_1_164528/}
}