Alomari, M., P. Duckworth, D. Hogg, and A. Cohn. “Natural Language Acquisition and Grounding for Embodied Robotic Systems”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 31, no. 1, Feb. 2017, https://ojs.aaai.org/index.php/AAAI/article/view/11161.