Bricmont, J., Lebowitz, JL., & Messager, A. (1983). 1st-order Phase-transitions in Potts and Ising Systems. Physics Letters. Section A: General, Atomic and Solid State Physics, 95(3-4), 169-172. https://doi.org/10.1016/0375-9601(83)90826-5 (Original work published 1983)