1. CONDO , E. S. and
TAYLOR , R. G. 1986 , Forest insect and disease conditions in Canada . 1985, Canadian Forestry Service report , Ottawa , Ontario Canada .
2. GATES , D. M. 1970 , Physical and physiological properties of plants. Remote sensing with special reference to agriculture and forestry , National Academy of Sciences , Washington , D.C. , pp. 224 – 252
3. Reflectance of leaf components