Bhargava, Preeti, and Ashok Agrawala. “Enabling Proactivity in Context-Aware Middleware Systems by Means of a Planning Framework Based on HTN Planning”. EAI Endorsed Transactions on Context-Aware Systems and Applications, vol. 2, no. 5, Aug. 2015, p. e5, https://doi.org/10.4108/eai.22-7-2015.2260304.