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Ruzhynsky Volodymyr Grygorovich. Improving signaling system №7 network quality characteristics under convergence of telecommunications networks : к.т.н. : spec.. 05.12.02 - Телекомунікаційні системи та мережі : presented. 2007-10-12; popup.evolution: .; National Telecommunication Academy of Odessa named after A.S. Popov. – , 0407U004176.