Castillo, Luis, Gabriella Cortellessa, and Neil Yorke-Smith. “The 2008 Scheduling and Planning Applications Workshop (SPARK’08)”. AI Magazine 30, no. 1 (January 18, 2009): 119. Accessed September 27, 2022. https://ojs.aaai.org/index.php/aimagazine/article/view/2215.