@article{MAN_1968__175_161664,
     author = {J.P. JANS},
     title = {A {Note} on {Injectives.}},
     journal = {Mathematische Annalen},
     pages = {239--242},
     publisher = {mathdoc},
     volume = {175},
     year = {1968},
     zbl = {0155.07404},
     url = {http://geodesic.mathdoc.fr/item/MAN_1968__175_161664/}
}