Fritz, S.C., Juggins, S., Battarbee, R.W., and Engstrom, D.R., 1991, reconstruction of past changes in salinity and climate using a diatom-based transfer function.  Nature 352, 706-708.

Laird, K. R., Fritz, S.C., Grimm, E.C., and Mueller, P.G., 1996.  Century-scale paleoclimatic reconstruction from Moon Lake, a closed-basin lake in the northern Great Plains.  Limnology and Oceanography, 41, 890-902.

Laird, K.R., Fritz, S.C., Maasch, K.A., and Cumming, B.F., 1996.  Greater drought intensity and frequency before AD 1200 in the northern Great Plains, USA.  Nature, 384, 552-554.