Bon, John van and Richard Weiss. "A characterization of the groups Fi22, Fi23 and Fi24" Forum Mathematicum, 4.4 (2009): 425-432. Retrieved 19 May. 2013, from doi:10.1515/form.1992.4.425

Bon, J. & Weiss, R. (2009). A characterization of the groups Fi22, Fi23 and Fi24. Forum Mathematicum, 4(4), pp. 1-633. Retrieved 19 May. 2013, from doi:10.1515/form.1992.4.425

Bon, John van and Richard Weiss. 2009. A characterization of the groups Fi22, Fi23 and Fi24. Forum Mathematicum. 4(4): 1-633. Retrieved 19 May. 2013, from doi:10.1515/form.1992.4.425