Planar two-point G1 Hermite interpolating log-aesthetic spirals. - Derek S. Meek; Takafumi Saito; Desmond J. Walton; Norimasa Yoshida (J. Comput. Appl. Math., 2012)

Curve design with more general planar Pythagorean-hodograph quintic spiral segments. - Desmond J. Walton; Derek S. Meek (Comput. Aided Geom. Des., 2013)