@article{Sousa:2000:OMG,
  number = {1},
  optnote = {},
  author = {Sousa, Mario Costa and John W. Buchanan},
  optkey = {},
  optannote = {},
  localfile = {papers/Sousa.2000.OMG.pdf},
  optmonth = {},
  journal = j-CGF,
  doi = {http://dx.doi.org/10.1111/1467-8659.00386},
  volume = {19},
  opturl = {},
  optabstract = {},
  optstatus = {url doi abstract},
  title = {{O}bservational {M}odel of {G}raphite {P}encil {M}aterials},
  year = {2000},
  pages = {27--49},
}