Belousov, K. I., L. A. Nazarova, and A. V. Roiter. 1997. “Finitely Represented Dyadic Sets and Their Multielementary Representations”. Ukrains’kyi Matematychnyi Zhurnal 49 (11), 1465–1477. https://umj.imath.kiev.ua/index.php/umj/article/view/5146.