Sevindikovna, Vafoyeva Zamira, and Bexbudov Shavkat Husenovich. 2021. “Improvement of Designs and Methods for Calculating the Parameters of Bobbins for a Sewing Machine”. Central Asian Journal of Theoretical and Applied Science 2 (10), 1-3. https://cajotas.centralasianstudies.org/index.php/CAJOTAS/article/view/232.