Burton, C. M., and P. J. Burton. “Recovery of Oplopanax Horridus (Sm.) Miq., an Important Ethnobotanical Resource, After Clearcut Logging in Northwestern British Columbia”. Ethnobotany Research and Applications, vol. 14, Jan. 2015, pp. 001-15, https://ethnobotanyjournal.org/index.php/era/article/view/1021.