@misc{indiciaed0dc2b63b2ce,
  title = {Relationship between the Porco, Bolivia, Ag-Zn-Pb-Sn deposit and the Porco Caldera},
  author = {Charles G. Cunningham and Hugo Aparicio N. and Fernando Murillo S. and Nestor C. Jimenez and J. L. Lizeca B. and Edwin H. McKee and George E. Ericksen and Franz Tavera V.},
  year = {1994},
  doi = {10.2113/gsecongeo.89.8.1833},
  url = {https://pubs.usgs.gov/publication/70017381},
  note = {Source identifier: 70017381}
}