Skrypnyk, O. “Research of Pricing Processes in the Regional Markets of Autoclaved Aerated Concrete of Ukraine in 2020 on the Basis of Cluster Analysis”. Ways to Improve Construction Efficiency 1, no. 49 (April 11, 2022): 206–222. Accessed October 5, 2022. http://ways.knuba.edu.ua/article/view/260011.