What Do Thinking-Aloud Participants Say? A Comparison of Moderated and Unmoderated Usability Sessions. - Morten Hertzum; Pia Borlund; Kristina B. Kristoffersen (Int. J. Hum. Comput. Interact., 2015)

What do usability test moderators say?: 'mm hm', 'uh-huh', and beyond. - Morten Hertzum; Kristina B. Kristoffersen (NordiCHI, 2018)