@misc{indiciae460659f21bb3,
  title = {Statistical, economic and other tools for assessing natural aggregate},
  author = {J. D. Bliss and P. R. Moyle and K. S. Bolm},
  year = {2003},
  doi = {10.1007/s10064-002-0152-7},
  url = {https://pubs.usgs.gov/publication/70026057},
  note = {Source identifier: 70026057}
}