Жовтуля, Л. Я., et al. “THE UNDERGROUNDPIPELINE SECTION STRESS-STRAINED STATE CHANGE DEFINITION USING THE NON-CONTACT POSITIONING FROM THE GROUND SURFACE DATA”. METHODS AND DEVICES OF QUALITY CONTROL, no. 2(39), Sept. 2017, pp. 14-22, https://mpky.nung.edu.ua/index.php/mpky/article/view/400.