A. T. Bui, T. T. M. Nguyen, and H. M. Nguyen, “Informal Institutions and Entrepreneurial Orientation: An Exploratory Investigation into Vietnamese Small and Medium Enterprises”, JED, vol. 20, no. 2, pp. 107–124, Aug. 2018, doi: 10.33301/JED-P-2018-20-02-06.