TY  - RPRT
TI  - A method for determining the onset year of intense browsing
AU  - R.B. Keigley
AU  - M.R. Frisina
AU  - C. Fager
PY  - 2003
DO  - 10.2307/4003878
UR  - https://pubs.usgs.gov/publication/70026054
ID  - 70026054
ER  -