@misc{indiciae6f24286675e2,
  title = {14 C ages and activity for the past 50 ka at Volcán Galeras, Colombia},
  author = {N.G. Banks and V.M.L. Calvache and S.N. Williams},
  year = {1997},
  doi = {10.1016/s0377-0273(96)00085-6},
  url = {https://pubs.usgs.gov/publication/70019939},
  note = {Source identifier: 70019939}
}