1. Ackerman S (2011) The iPhone 4S’ talking assistant is a military veteran. Wired, 2011. www.wired.com/2011/10/siri-darpa-iphone/ . Retrieved 26 Jan 2015
2. Ambite JL, Barish G, Knoblock CA, Muslea M, Oh J, Minton S (2002) Getting from here to there: Interactive planning and agent execution for optimizing travel. In: Proceedings of fourteenth conference on innovative applications of artificial intelligence (IAAI’02), pp 862–869
3. Ambite J-L, Chaudhri VK, Fikes R, Jenkins J, Mishra S, Muslea M, Uribe T, Yang G (2006) Design and implementation of the CALO Query Manager. In: Proceedings of eighteenth conference on innovative applications of artificial intelligence (IAAI’06), pp 1751–1758
4. Aylett R, Brazier F, Jennings N, Luck M, Nwana H, Preist C (1998) Agent systems and applications. Knowl Eng Rev 13(3):303–308
5. Azvine B, Djian D, Tsui KC, Wobcke W (2000) The intelligent assistant: an overview. In: Intelligent systems and soft computing: prospects, tools and applications. Lecture notes in computer science, vol 1804. Springer, New York, NY, pp 215–238