@article{MZ_1960__73_169828,
     author = {Hanna Neumann and James Wiegold},
     title = {Linked products and linked embeddings of groups.},
     journal = {Mathematische Zeitschrift},
     pages = {1--19},
     publisher = {mathdoc},
     volume = {73},
     year = {1960},
     zbl = {0105.25801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1960__73_169828/}
}