@article{MZ_1983__182_173266,
     author = {Karl Strambach and Hans Scheerer},
     title = {Idempotente {Multiplikationen.}},
     journal = {Mathematische Zeitschrift},
     pages = {95--120},
     publisher = {mathdoc},
     volume = {182},
     year = {1983},
     zbl = {0505.55011},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__182_173266/}
}