- Prof. Ir. Dr. Leong Wai Yie (INTI International University, Malaysia), Scopus, Personal Web
- Prof. Masashi Unoki (Japan Advanced Institute of Science and Technology, Japan), Scopus, Personal Web
- Prof. Geovanni Pau (Kore University of Enna, Italy), Scopus, Personal Web
- Prof. Tumiran (Universitas Gadjah Mada, Indonesia), Scopus, Personal Web