@article{Hershler2010,
  author    = {Robert Hershler},
  title     = {A systematic review of the hydrobiid snails (Gastropoda: Rissooidea) of the Great Basin, Western United States : 1. Genus Pyrgulopsis},
  journal   = {The Veliger},
  volume    = {41},
  number    = {1},
  pages     = {1 -- 132},
  year      = {2010},
}