Khudaybergenov Ш., Eshonkhodjaev О., and Hayaliev Р. “SURGICAL TREATMENT OF PERSISTENT DEFECTS OF THE ANTERIOR WALL OF THE TRACHEA IN CHILDREN”. SCIENCE AND INNOVATIVE DEVELOPMENT, vol. 2, no. 4, Sept. 2019, pp. 21-30, https://ilm-fan-journal.csti.uz/index.php/journal/article/view/228.