1. Department of Mechanical Engineering Science, Faculty of Engineering and the Built Environment; University of Johannesburg; Auckland Park 2006 JOHANNESBURG SOUTH AFRICA
2. Department of Mechanical Engineering; Covenant University; OTA-OGUN STATE NIGERIA
3. Department of Mechanical and Industrial Engineering Technology, Faculty of Engineering and the Built Environment; University of Johannesburg, Doornfontein, JOHANNESBURG; SOUTH AFRICA