Lapka, Dominik, Petra Wagner, Barbara Schober, Petra Gradinger, and Christiane Spiel. “Benefits of the Person-Oriented Perspective for Program Evaluation: Analyzing the Differential Treatment Effects of the Vienna E-Lecturing Program”. Journal of MultiDisciplinary Evaluation 7, no. 16 (July 25, 2011): 66–83. Accessed August 19, 2022. https://journals.sfu.ca/jmde/index.php/jmde_1/article/view/313.