TY  - RPRT
TI  - Mineralized and unmineralized calderas in Spain; Part I, evolution of the Los Frailes Caldera
AU  - C. G. Cunningham
AU  - A. Arribas
AU  - J. J. Rytuba
PY  - 1990
DO  - 10.1007/bf00205246
UR  - https://pubs.usgs.gov/publication/70015818
ID  - 70015818
ER  -