Kawasaki, Morimichi, Mitsuaki Kimura, Takahiro Matsushita, Shuhei Maruyama, and Masato Mimura. “Survey on Invariant Quasimorphisms and Stable Mixed Commutator Length”. Topology Proceedings 64 (June 28, 2024): 129–174. Accessed June 30, 2026. https://www.topologyproceedings.org/index.php/tp/article/view/126.