1. Maintaining knowledge about temporal intervals;Allen;Commun. ACM,1983
2. Robotic roommates making pancakes;Beetz,2011
3. CRAM—a cognitive robot abstract machine for everyday manipulation in human environments;Beetz,2010
4. Towards automated models of activities of daily life;Beetz;Technol. Disabil.,2010
5. Qualitative-numeric simulation with Q3;Berleant,1992