Hayes AF, Rockwood NJ. Regression-based statistical mediation and moderation analysis in clinical research: observations, recommendations, and implementation. Behav Res Ther. 2017 Nov;98:39-57. doi: 10.1016/j.brat.2016.11.001
Maughan GL, Gnanasakthy A, Cooke DA. The effects of soil-applied granular pesticides on the establishment and yield of sugar-beet in commercial fields. Crop Prot. 1984 Dec;3(4):439-50.