@article{MZ_1971__122_171596,
     author = {Martin Moskowitz and Richard D. Mosak},
     title = {Central {Idempotents} in {Measure} {Algebras.}},
     journal = {Mathematische Zeitschrift},
     pages = {217--222},
     publisher = {mathdoc},
     volume = {122},
     year = {1971},
     zbl = {0214.38004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__122_171596/}
}