• Business development models for regional airports - case studies from the Baltic Sea regionBeifert, AnatoliJournal of security and sustainability issues2015 / p. 199-212 : tab https://journals.lka.lt/journal/jssi/article/1520/info https://www.scopus.com/sourceid/21100301405 https://www.scopus.com/record/display.uri?eid=2-s2.0-84951021982&origin=inward&txGid=3bcd30d5ef2d8143e55c940e3dd786e9