Karlowski, Andrzej, and Jerzy Paslawski. “Monitoring of Construction Processes in the Variable Environment / Statybos Procesų Stebėsena Kintančioje Aplinkoje”. Technological and Economic Development of Economy 14, no. 4 (December 31, 2008): 503-517. Accessed November 22, 2019. https://journals.vgtu.lt/index.php/TEDE/article/view/6969.