Lenth, R., Buerkner, P., Herve, M., Jung, M., Love, J., Miguez, F., Riebl, H., Singmann, H. (2022). emmeans: Estimated Marginal Means, aka Least-Squares Means. Estimated Marginal Means, aka Least-Squares Means. cran.r-project.org. Retrieved from https://cran.r-project.org/web/packages/emmeans/emmeans.pdf