Digital Badges for Motivating Introductory Programmers: Qualitative Findings from Focus Groups. - Lisa Facey-Shaw; Marcus Specht; Jeanette Bartley-Bryan (FIE, 2018)

Educational Functions and Design of Badge Systems: A Conceptual Literature Review. - Lisa Facey-Shaw; Marcus Specht; Peter van Rosmalen; Dirk Börner; Jeanette Bartley-Bryan (IEEE Trans. Learn. Technol., 2018)