@misc{indiciae9541883a89eb,
  title = {Volatility of bitumen prices and implications for the industry},
  author = {E. D. Attanasi},
  year = {2008},
  doi = {10.1007/s11053-008-9078-5},
  url = {https://pubs.usgs.gov/publication/70032878},
  note = {Source identifier: 70032878}
}