On PH quintic spirals joining two circles with one circle inside the other

Zulfiqar Habib, Manabu Sakai. On PH quintic spirals joining two circles with one circle inside the other. Computer-Aided Design, 39(2):125-132, 2007. [doi]

@article{HabibS07:1,
  title = {On PH quintic spirals joining two circles with one circle inside the other},
  author = {Zulfiqar Habib and Manabu Sakai},
  year = {2007},
  doi = {10.1016/j.cad.2006.10.006},
  url = {http://dx.doi.org/10.1016/j.cad.2006.10.006},
  tags = {Spiral},
  researchr = {https://researchr.org/publication/HabibS07%3A1},
  cites = {0},
  citedby = {0},
  journal = {Computer-Aided Design},
  volume = {39},
  number = {2},
  pages = {125-132},
}