1. Conflicted: Faculty and online education, 2012;Allen,2012
2. Changing course: Ten years of tracking online education in the United States, 2013;Allen,2013
3. Grade change: Tracking online education in the United States, 2013;Allen,2014
4. Online, blended and classroom teaching of economics principles: A randomized experiment;Alpert,2015
5. Learning to learn online: A study of perceptual changes between multiple online course experiences;Arbaugh;The Internet and Higher Education,2004