O. J. Ferrians, D. R. Nichols, J. R. Williams,
Copper River Basin Quaternary Geology and Permafrost Along the Richardson and Glen Highways Between Fairbanks and Anchorage, Alaska: Fairbanks to Anchorage, Alaska July 1-7, 1989. pp. 39- 44 ,(2013) ,
10.1029/FT102P0039