@article{MAN_1976__224_162912,
     author = {Birge Zimmermann-Huisgen},
     title = {Pure {Submodules} of {Direct} {Products} of {Free} {Modules.}},
     journal = {Mathematische Annalen},
     pages = {233--246},
     publisher = {mathdoc},
     volume = {224},
     year = {1976},
     zbl = {0321.16015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1976__224_162912/}
}