The following publications are possibly variants of this publication:
- Fair cubic transition between two circles with one circle inside or tangent to the otherSarpono Dimulyo, Zulfiqar Habib, Manabu Sakai. na, 51(4):461-476, 2009. [doi]
- 2 PH quintic spiral transitionsZulfiqar Habib, Manabu Sakai. ijcm, 90(5):1023-1039, 2013. [doi]
- Transition between concentric or tangent circles with a single segment of G:::2::: PH quintic curveZulfiqar Habib, Manabu Sakai. cagd, 25(4-5):247-257, 2008. [doi]
- G:::2::: Pythagorean hodograph quintic transition between two circles with shape controlZulfiqar Habib, Manabu Sakai. cagd, 24(5):252-266, 2007. [doi]