Ivashchuk, Oleg Orestovich, <pre id="tw-target-text" class="tw-data-text tw-text-large tw-ta" dir="ltr"><span class="Y2IQFc" lang="en">Candidate of Technical Sciences, Associate Professor </span>Caspian University of Technology and Engineering named after Sh. Yessenov</pre>Aktau, Ka, Kazakhstan