Thiffault, Nelson, and Charles Ward. “Mid- and Long-Term Effects of Stock Type on the Growth and Yield of Spruce Seedlings in a Non-Herbicide Scenario”. REFORESTA, no. 6 (December 28, 2018): 60–70. Accessed March 29, 2024. https://journal.reforestationchallenges.org/index.php/REFOR/article/view/95.