References
- DUGGIN , M. J. , 1980 , The field measurement of reflectance factors . Photogramm. Engng remote Sensing , 46 , 643 .
- DUGGIN , M. J. , and PHILIPSON , W. R. , 1982 , Field measurement of reflectance some major considerations . Appt. Optics , 21 , 2833 .
- †This short note is published not because it contains any great scientific discovery but because I believe that we need to give more emphasis in remote sensing to the use of simple instruments and techniques for educational and other purposes. Other contributions with this philosophy will also be welcome.—Editor.