Sivilevičius, Henrikas, Alfonsas Daniūnas, Edmundas Kazimieras Zavadskas, Zenonas Turskis, and Saulius Sušinskas. 2012. “Experimental Study on Technological Indicators of Pile-Columns at a Construction Site”. Journal of Civil Engineering and Management 18 (4):512-18. https://doi.org/10.3846/13923730.2012.709958.