Сериков Т. Г., and Якубова М. З. “THE COMPARATIVE ANALYSIS OF ARCHITECTURE OF ASTERISK IN RELATION WITH CLASSICAL AUTOMATIC TELEPHONE EXCHANGES”. World Science 1, no. 4(8) (April 30, 2016): 68-70. Accessed August 5, 2025. https://rsglobal.pl/index.php/ws/article/view/1122.