Ishii, Tomoko, Phil Bennett, and Tim Stoeckel. “Challenges in the Assumptions of Using a Flemma-Based Word Counting Unit”. Vocabulary Learning and Instruction 10, no. 1 (April 30, 2021): 1–15. Accessed September 15, 2026. https://www.castledown.com/journals/vli/article/view/vli.v10.1.Ishii.