The Wayback Machine - https://web.archive.org/web/20230901114702/https://books.google.com/books?id=XzkLEAAAQBAJ&dq=lot+polish+airlines+flag+carrier&pg=PT118
Air Transport and Regional Development Case Studies
edited by Anne Graham, Nicole Adler, Hans-Martin Niemeier, Ofelia Betancor, António Pais Antunes, Volodymyr Bilotkach, Enrique J. Calderón, Gianmaria Martini