Petrenko, V. I., V. D. Petrenko, and H. K. Savinkov. “Technology Reliability of Soil Solidification at Interstation Tunnels Operation of the Kiev Underground”. Science and Transport Progress , no. 35 (December 25, 2010): 135–138. Accessed May 5, 2024. https://stp.ust.edu.ua/article/view/8885.