CrossY: a crossing-based drawing application. - Georg Apitz; François Guimbretière (ACM Trans. Graph., 2005)

Phrasing techniques for multi-stroke selection gestures. - Ken Hinckley; François Guimbretière; Maneesh Agrawala; Georg Apitz; Nicholas Chen (Graphics Interface, 2006)

Foundations for designing and evaluating user interfaces based on the crossing paradigm. - Georg Apitz; François Guimbretière; Shumin Zhai (ACM Trans. Comput. Hum. Interact., 2010)