Shardakov, I.N., N.S. Sozonov, and R.V. Tsvetkov. 2016. “EXPERIMENTAL-THEORETICAL PRINCIPLES OF AUTOMATIC DEFORMATION MONITORING SYSTEMS USING FIBER-OPTICAL ELEMENTS”. Perm Federal Research Centre Journal, no. 4 (December): 91-95. https://journal-dev.icmm.ru/index.php/pscj/article/view/PSCJ2016n4p15.