@article{Gregoire2011,
  author    = {Charles Gr{\´e}goire},
  title     = {On submicroscopic structure of the nautilus shell},
  journal   = {Bulletin / Institut Royal des Sciences Naturelles de Belgique},
  volume    = {38},
  number    = {49},
  pages     = {1 -- 71},
  year      = {2011},
}