Due dates in MOOCs: does stricter mean better? - Sergiy O. Nesterko; Daniel T. Seaton; Justin Reich; Joseph McIntyre; Qiuyi Han; Isaac L. Chuang; Andrew D. Ho (L@S, 2014)

Beyond Time-on-Task: The Relationship Between Spaced Study and Certification in MOOCs. - Yohsuke Roy Miyamoto; Cody A. Coleman; Joseph Jay Williams; Jacob Whitehill; Sergiy O. Nesterko; Justin Reich (J. Learn. Anal., 2015)