@article{Xin2014Measuring,
  title={Measuring length and girth of a tubular shape by quasi-helixes},
  author={Xin, Shi Qing and Chen, Shuangmin and Zhao, Jieyu and Pan, Zhigeng},
  journal={Computers & Graphics},
  volume={38},
  number={1},
  pages={392-398},
  year={2014},
}