R. Free

Vertical distribution and isotopic fractionation of living planktonic foraminifera from the Panama Basin

P. Wiebe, R. Fairbanks, A. Bé, 1982, Nature.

Late Quaternary Climatic Record in Western Equatorial Atlantic Sediment

J. Damuth, A. Bé, R. Free, 1976 .

Tree-ring width and maximum latewood density at the North American tree line: parameters of climatic change

G. Jacoby, R. D'Arrigo, R. Free, 1992 .