1. University of Pembangunan Nasional “Veteran” Jawa Timur,Master of Information Technology,Surabaya,Indonesia,60294
2. Biak Engineering Academy Biak Numfor,Departement of Mechanical Engineering,Papua,Indonesia,98511
3. University of Pembangunan Nasional “Veteran” Jawa Timur,Department of Informatics,Surabaya,Indonesia,60294