McElfresh, D. C., L. Chan, K. Doyle, W. Sinnott-Armstrong, V. Conitzer, J. Schaich Borg, and J. P. Dickerson. “Indecision Modeling”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 7, May 2021, pp. 5975-83, https://ojs.aaai.org/index.php/AAAI/article/view/16746.