Gabdullina, A. T., Zhukeshov, A. M., Amrenova, A. U., Sundetov, T., Kaibar, A., & Fermakhan, K. (2014). To develop of automated vacuum ark unit. Recent Contributions to Physics, 2014(4), 47-51. https://bph.kaznu.kz/index.php/zhuzhu/article/view/53