Denton, G.H., Lowell, T.V., Heusser, C.J., Moreno, P.I., Andersen, B.G., Heusser, L.E., Schl¸chter, C., and Marchant, D.R., 1999, Interhemispheric linkage of paleoclimate during the last glaciation. Geografiska Annaler 81A, 107-153.