S. Quaglia
Canham, Charles D., K.D. Coates, P. Bartemucci, and S. Quaglia. 1999. “Measurement and Modeling of Spatially-Explicit Variation in Light Transmission through Interior Cedar-Hemlock Forests of British Columbia”. Can. J. For. Res. 29: 1775-83. http://www.caryinstitute.org/reprints/Canham_et_al_1999_Can_J_For_Res_29_1775-1783.pdf.