Benton, J., K. Talamadupula, P. Eyerich, R. Mattmuller, and S. Kambhampati. “G-Value Plateaus: A Challenge for Planning”. Proceedings of the International Conference on Automated Planning and Scheduling, vol. 20, no. 1, May 2021, pp. 259-62, doi:10.1609/icaps.v20i1.13396.