Werner, C.A., Kelly, P.J., Doukas, M.P., Pfeffer, M.A., Evans, W.C., McGimsey, Game, and Neal, Christina, 2009, Precursory gas emissions to the initial magmatic eruption of Redoubt Volcano (Alaska) in 2009 [abs.]: Abstracts with Programs - Geological Society of America, v. 41, n. 7, p. 482.