@article{MM2_1986__55_155145,
     author = {Wolfgang Sander},
     title = {Wighted-Additive {Deviations} with the {Sum} {Property.}},
     journal = {Manuscripta mathematica},
     pages = {373--384},
     publisher = {mathdoc},
     volume = {55},
     year = {1986},
     zbl = {0597.39004},
     url = {http://geodesic.mathdoc.fr/item/MM2_1986__55_155145/}
}