S. Serikbayeva, J. A. Tussupov, M. A. Sambetbayeva, A. Yerimbetova, G. Borankulova, and A. Tungatarova, “A MODEL OF A DISTRIBUTED INFORMATION SYSTEM BASED ON THE Z39.50 PROTOCOL”, Int. j. commun. netw. inf. secur., vol. 13, no. 3, Apr. 2022.