@article{MZ_1973__130_171846,
     author = {Marc W. Konvisser},
     title = {2-Groups which {Contain} {Exactly} {Three} {Involutions.}},
     journal = {Mathematische Zeitschrift},
     pages = {19--30},
     publisher = {mathdoc},
     volume = {130},
     year = {1973},
     zbl = {0238.20023},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__130_171846/}
}