Cooper, Benjamin Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.4310/MRL.2021.v28.n1.a2 (Publisher version)
Cooper, B., & Samuelson, P. (2021). The Hall algebras of annuli. Mathematical Research Letters, 28(1), 25-63. doi:10.4310/MRL.2021.v28.n1.a2.