Friedman I. Monitoring of thermal activity in Southwestern Yellowstone National Park and Vicinity,1980-1993 / I.Friedman,D.R.Norton,R.A.Hutchinson, 1993. - 19 p. - Текст : непосредственный.
Norton D.R. Chloride flux and surface water discharge out of Yellowstone National Park,1982-1989 : Tabulation of discharge, chloride concentration a. chloride flux for the rivers a. streams yields inform. related to heat flux from the Park / D.R.Norton,I.Friedman, 1991. - IV,42 p. p. - Текст : непосредственный.