1. The 1989–1990 eruption of Redoubt Volcano;Alaska Volcano Observatory Staff;EOS, Trans. Am. Geophys. Union,1990
2. The development and distribution of surface textures;Anderson,1989
3. Classification of pyroclastic flows;Aramaki;Int. Geol. Rev.,1961
4. The eruption of Redoubt Volcano, Alaska, December 14, 1989–August 31, 1990,1990
5. Pyroclastic deposits of the November 13, 1985 eruption of Nevado del Ruiz volcano, Columbia;Calvache,1990