<link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2? family=Montserrat:wght@100;200;300;400;500;600;700;800;900&family=Roboto+Slab:wght@100;300;400;500;600;800;900&display=swap" rel="stylesheet"> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@100;300;400;500;600;800;900&display=swap" rel="stylesheet"> Vol. 2 No. 1 (2017): Bulletin of Zhetysu State University named after I.Zhansugurov | BULLETIN OF ZHETYSU UNIVERSITY NAMED AFTER I.ZHANSUGUROV