En garde! Unguarded iteration for reversible computation in the delay monadKaarsgaard, Robin; Veltri, NiccoloMathematics of Program Construction : 13th International Conference, MPC 2019, Porto, Portugal, October 7–9, 2019 : proceedings2019 / p. 366-384 https://doi.org/10.1007/978-3-030-33636-3_13