P. Pakvipas, K. Nithisathian, R. Pongwiritthon, and S. Chongesiriroj, “The Study Guidelines for Problem, Obstacle and Criteria Indicator to Operate The Excellence: The Case Study of The Center of Excellence, Rajamangala University of Technology Lanna, Chiang Mai”, BALARMUTL, vol. 5, no. 1, pp. 97–110, Jun. 2017.