[1] Use of volcanic glass from ash as a monitoring tool: an example from the 1992 eruptions of Crater Peak, Mount Spurr volcano, Alaska, 1995

Swanson, S. E., Harbin, M. L., and Riehle, J. R., 1995, Use of volcanic glass from ash as a monitoring tool: an example from the 1992 eruptions of Crater Peak, Mount Spurr volcano, Alaska: in Keith, T. E. C., (ed.), The 1992 eruptions of Crater Peak Vent, Mount Spurr volcano, Alaska, U.S. Geological Survey Bulletin 2139, p. 129-137.