@article{ers07,
   author    = "Howard Elman and Alison Ramage and David Silvester",
   title     = "Algorithm {866}: {IFISS}, a {M}atlab toolbox for modelling
incompressible flow",
   journal   = "ACM Trans. Math. Softw.",
   volume    = "33",
   pages     = "2--14",
   year      = "2007"
}

@article{ers14,
author    = "Howard Elman and Alison Ramage and David Silvester",
title     = "{IFISS}: A computational laboratory for investigating incompressible flow problems",
journal   = "SIAM Review",
volume    = "56",
pages     = "261--273",
year      = "2014"
}

@misc{ifiss,
  author = "David  Silvester and Howard  Elman and Alison Ramage",
  title = "{I}ncompressible {F}low and {I}terative {S}olver {S}oftware ({IFISS})
version 3.5",
  month ="September",
  year = "2016",
  note = "{\tt http://www.cs.umd.edu/~elman/ifiss/}"