Lee, D., Durbán, M., & Eilers, P. (2013). Efficient two-dimensional smoothing with P-spline ANOVA mixed models and nested bases. Computational statistics & data analysis, 61, 22-37. https://doi.org/10.1016/j.csda.2012.11.013
Chicago Style (17th ed.) CitationLee, Dae-Jin, María Durbán, and Paul Eilers. "Efficient Two-dimensional Smoothing with P-spline ANOVA Mixed Models and Nested Bases." Computational Statistics & Data Analysis 61 (2013): 22-37. https://doi.org/10.1016/j.csda.2012.11.013.
MLA (9th ed.) CitationLee, Dae-Jin, et al. "Efficient Two-dimensional Smoothing with P-spline ANOVA Mixed Models and Nested Bases." Computational Statistics & Data Analysis, vol. 61, 2013, pp. 22-37, https://doi.org/10.1016/j.csda.2012.11.013.
Warning: These citations may not always be 100% accurate.