Ethan Kutlu has published a paper, "Moving away from deficiency models: Gradiency in bilingual speech categorization", with Bob McMurray in Psychological and Brain Sciences (PBS) and Samantha Chiu, a graduate student in PBS.

Kutlu, E., Chiu, S., & McMurray, B. (2022). Moving away from deficiency models: Gradiency in bilingual speech categorization. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2022.1033825

This is an open access paper, so the paper is available via the following link: https://www.frontiersin.org/articles/10.3389/fpsyg.2022.1033825/full