Participation, interaction and social presence: An exploratory study of collaboration in online peer review groups. - Huahui Zhao; Kirk P. H. Sullivan; Ingmarie Mellenius (Br. J. Educ. Technol., 2014)

Teaching presence in computer conferencing learning environments: Effects on interaction, cognition and learning uptake. - Huahui Zhao; Kirk P. H. Sullivan (Br. J. Educ. Technol., 2017)