Nadkarni, N. M., and G. G. Parker. “A PROFILE OF FOREST CANOPY SCIENCE AND SCIENTISTS—WHO WE ARE, WHAT WE WANT TO KNOW, AND OBSTACLES WE FACE: RESULTS OF AN INTERNATIONAL SURVEY”. Selbyana, vol. 15, no. 2, Sept. 1994, pp. 38-50, https://journals.flvc.org/selbyana/article/view/120925.