Abbas, T., U. Gadiraju, V.-J. Khan, and P. Markopoulos. “Making Time Fly: Using Fillers to Improve Perceived Latency in Crowd-Powered Conversational Systems”. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing, vol. 9, no. 1, Oct. 2021, pp. 2-14, https://ojs.aaai.org/index.php/HCOMP/article/view/18935.