Sugihara, S. and Kishino, M. (1988)

Sugihara, S. and Kishino, M. (1988). An algorithm for estimating the water quality parameters from irradiance just below the sea surface.  J. Geophys. Res., 93: 10,857-10,862.

Stumpf, R.P., and Pennock, J.R. (1989)

Stumpf, R.P., and Pennock, J.R. (1989). Calibration of a general optical equation for remote sensing of suspended sediments in a moderately turbid estuary.  J. Geophys. Res., 94: 14,363-14,371.