Bondarenko, V. M., & Styopochkina, M. V. (2020). Strengthening of a theorem on Coxeter–Euclidean type of principal partially ordered sets. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, 4, 8-15. https://doi.org/10.17721/1812-5409.2018/4.1