Time Contexts in Document-Driven Projects on the Web: From Time-Sensitive Links towards an Ontology of Time. - Anneli Heimbürger; Jari Multisilta; Kai Ojansuu (EJC, 2006)

Exploring the Educational Potential of a Game-Based Math Competition. - Kristian Kiili; Kai Ojansuu; Antero Lindstedt; Manuel Ninaus (Int. J. Game Based Learn., 2018)