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
.