Mai, T. V. “SYSTEMS THINKING APPROACH AS A UNIQUE TOOL FOR SUSTAINABLE TOURISM DEVELOPMENT: A CASE STUDY IN THE CAT BA BIOSPHERE RESERVE OF VIETNAM”. Proceedings of the 54th Annual Meeting of the ISSS - 2010, Waterloo, Canada, vol. 54, no. 1, Aug. 2010, https://journals.isss.org/index.php/proceedings54th/article/view/1457.