Waitt, R. B., Gardner, C. A., Janda, R. J., Miller, T. P., Major, J. J., Pierson, T. C., Neal, C. A., and Vallance, J. W., 1990, Unusual ice conglomerate emplaced during the 15 December 1989 eruption of Redoubt Volcano, Alaska [abs.]: Eos, v. 71, n. 43, p. 1706.