Cas, R.A.F., and Wright, J.V.,
1988, Volcanic Successions - Modern and Ancient, Unwin Hyman,
London, 528 p.
Walker, G.P.L., 1973, Explosive
Volcanic Eruptions - a new classification scheme, Geol. Rundsch.,
v. 62, p. 431-446.
Wright, J.V., Smith, A.L., Self,
S., 1980, A Working Terminology of Pyroclastic Deposits, Journal
Volcanology and Geothermal Research, v. 8, p. 315-336.