Dungan, J. L., L. F. Johnson, C. R. Billow, J. Mazzurco,
J. Moen, P. A. Matson, and
V. Vanderbilt (1996), High spectral resolution reflectance of Douglas fir grown under different fertilization treatments: Experiment design and treatment effects,
Rem. Sens. Environ., 55, 217-228.