@misc{indiciaececff9cb8725,
  title = {Sampling and major element chemistry of the recent (A.D. 1631-1944) Vesuvius activity},
  author = {H. E. Belkin and C.R.J. Kilburn and B. de Vivo},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70018010},
  note = {Source identifier: 70018010}
}