Cyclic quadrangles from squares. Čerin, Zvonko, Gianella, Gian Mario (2006) Annales Mathematicae et Informaticae
Cyclides of order 3 in Galileian space G 3 . (Zykliden 3. Ordnung des galileischen Raumes G 3 .) Palman, Dominik (1995) Mathematica Pannonica
Cyclides of rotation of the Galileian space G 3 . (Drehzykliden des galileischen Raumes G 3 .) Palman, Dominik (1991) Mathematica Pannonica