On the periods of 2-step general Fibonacci sequences in dihedral groups. Karaduman, Erdal; Aydin, Hüseyin — 2006 Matematichki Vesnik
Torus knots and Dunwoody manifolds. Aydin, Hüseyin; Gültekyn, Inci; Mulazzani, Michele — 2004 Sibirskij Matematicheskij Zhurnal