Branch-explore-merge: facilitating real-time revision control in collaborative visual exploration. - Will McGrath; Brian Bowman; David C. McCallum; Juan David Hincapié-Ramos; Niklas Elmqvist; Pourang Irani (ITS, 2012)

Toward Visualization for Games: Theory, Design Space, and Patterns. - Brian Bowman; Niklas Elmqvist; T. J. Jankun-Kelly (IEEE Trans. Vis. Comput. Graph., 2012)