@misc{indiciae1a88188cf8b8, title = {Helium isotope and gas discharge variations associated with crustal unrest in Long Valley Caldera, California, 1989-1992}, author = {M.L. Sorey and B. M. Kennedy and W.C. Evans and C. D. Farrar and G.A. Suemnicht}, year = {2012}, doi = {10.1029/93jb00703}, url = {https://pubs.usgs.gov/publication/70199739}, note = {Source identifier: 70199739} }