@article{Day:1990:TIO,
  author = {A. M. Day},
  title = {The Implementation of an Algorithm to Find the Convex Hull of a Set of Three-Dimensional Points},
  journal = {ACM Transactions on Graphics},
  volume = {9},
  number = {1},
  pages = {105--132},
  month = jan,
  year = {1990},
}