1. Universitas PGRI Semarang,Faculty of Engineering and Informatics,Department of Mechanical Engineering,Semarang,Central Java,Indonesia,50232
2. Universitas PGRI Semarang,Postgraduate Program of Science Education,Semarang,Central Java,Indonesia,50232
3. ABES Engineering College,Department of Mechanical Engineering,Ghaziabad,Uttar Pradesh,India,201009