@book{go-mi-sa:latex,
  author="M. Goossens and F. Mittelbach and A. Samarin",
  title="The {LATEX} Companion",
  publisher="Addison-Wesley",
  year="1994"
}
@book{dykstra:forest,
  author="D. P. Dykstra",
  title="Mathematical Programming for Natural Resource Management",
  publisher="McGraw-Hill",
  year="1984"
}
@article{zh-pan:panda,
  author="Z. Zhou and W. Pan",
  title="Analysis of the viability of a giant panda population",
  journal="J. Applied Ecology",
  volume="34",
  year="1997",
  pages="363-374"
}
