Menth, Martin. "Nilpotent groups with every quotient residually finite" Journal of Group Theory, 5.2 (2008): 199-217. Retrieved 25 May. 2013, from doi:10.1515/jgth.5.2.199

Menth, M. (2008). Nilpotent groups with every quotient residually finite. Journal of Group Theory, 5(2), pp. 129-240. Retrieved 25 May. 2013, from doi:10.1515/jgth.5.2.199

Menth, Martin. 2008. Nilpotent groups with every quotient residually finite. Journal of Group Theory. 5(2): 129-240. Retrieved 25 May. 2013, from doi:10.1515/jgth.5.2.199