Kato, S, Kato, Y, Usuki, K (Role: Contributor, Associations between dependency on Line text messaging and occurrence of negative emotions in Line group chats)
Kato, Y, Kato, S, Ozawa, Y (Role: Contributor, Desired speed of reply during text-based communication via smartphones: A survey of young Japanese adults)
Kato, Y, Kato, S, Chida, K (Role: Contributor, Reply timing as emotional strategy in mobile text communications of Japanese young people: focusing on perceptual gaps between senders and recipients)
Kato, Y, Kato, S, Chida, K (Role: Contributor, Reply timing and emotional strategy in mobile text communications of Japanese young people: replies to messages conveying four different emotions)
Scott, D. J, Coursaris, C. K, Kato, Y, Kato, S (Role: Contributor, The exchange of emotional context in business communications: a comparison of PC and mobile email users)
Kato, Y, Kato, S, Scott, D. J (Role: Contributor, Misinterpretation of Emotional Cues and Content in Japanese Email, Computer Conferences, and Mobile Text Messages)
Nova Science Publishers, Nov, 2007 (ISBN: 1600217729)