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  • news.den.bg/home/scitech/%D0%94%D0%B5%D1%86%D0%B0-%D0%BF%D0%BE%D0%BC%D0%B0%D0%B3%D0%B0%D1%82-%D0%BD%D0%B0-%D0%B4%D0%B5%D1%86%D0%B0?il=bg&nid=3832589&year=2011 (port 80)