@article{MZ_1952__57_169324,
     author = {G\"unter Pickert},
     title = {Direkte {Zerlegungen} von algebraischen {Strukturen} mit {Relationen.}},
     journal = {Mathematische Zeitschrift},
     pages = {395--404},
     publisher = {mathdoc},
     volume = {57},
     year = {1952},
     zbl = {0050.02802},
     url = {http://geodesic.mathdoc.fr/item/MZ_1952__57_169324/}
}