@misc{indiciaeb2497a22f78a,
  title = {Geochemical surveillance of magmatic volatiles at Popocatepetl volcano, Mexico},
  author = {F. Goff and C. J. Janik and H. Delgado and C. Werner and D. Counce and J.A. Stimac and C. Siebe and S.P. Love and S.N. Williams and T. Fischer and L. Johnson},
  year = {1998},
  doi = {10.1130/0016-7606(1998)110<0695:gsomva>2.3.co;2},
  url = {https://pubs.usgs.gov/publication/70020381},
  note = {Source identifier: 70020381}
}