Citation:
Shen C, Ryall K, Forlines C, Esenther A, Vernier FD, Everitt K, Wu M, Wigdor D, Ringel Morris M, Hancock M, et al. Collaborative Tabletop Research and Evaluation: Interface and Interactions on Direct-Touch Horizontal Surfaces. In: Interactive Artifacts and Furniture Supporting Collaborative Work and Learning. New York, USA: Springer ; 2008. pp. 111-128.