Abbas, Tahir, Ujwal Gadiraju, Vassilis-Javed Khan, and Panos Markopoulos. 2021. “Making Time Fly: Using Fillers to Improve Perceived Latency in Crowd-Powered Conversational Systems”. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing 9 (1):2-14. https://ojs.aaai.org/index.php/HCOMP/article/view/18935.