Angelopoulos, J. and Chlomoudis , C. I. (2017) “ A Generalized Dynamic Factor Model for the U.S. Port Sector”, SPOUDAI Journal of Economics and Business, 67(1), pp. 22–37. Available at: http://spoudai.org/index.php/journal/article/view/153 (Accessed: 30 October 2024).