1. Competition quotient: an index of the competitive stress affecting individual forest trees;Gerrard;Dissertation Abstr. B,1968
2. Common trees of Puerto Rico and the Virgin Islands;Little,1964
3. The effect of competition on tree growth (preliminary results);Lowe,1966
4. Silvicultural characteristics of trees in growth by pattern analysis and standcurve analysis on the electronic computer;Lowe,1973