I. J. Davenport and M. Silgram and J. S. Robinson and A. Lamb and J. J. Settle and A. WilligPhysics and Chemistry of the Earth, Parts A/B/C28(33-36):1365--1376(2003)
D.P. Roy and P. LewisAmerican Geophysical Union Spring 2000 Meeting, Session B04: Remote Sensing of the Biosphere, Washington DC, May 30 - June 3, (2000)