@article{IM_1968__5_141927,
     author = {D. GILDENHUYS},
     title = {On {Pro-p-groups} with a {Single} {Defining} {Relator.}},
     journal = {Inventiones mathematicae},
     pages = {357--366},
     publisher = {mathdoc},
     volume = {5},
     year = {1968},
     zbl = {0159.30601},
     url = {http://geodesic.mathdoc.fr/item/IM_1968__5_141927/}
}