2021 · Didik Wahjudi, Yosua Dhiemas Picky Projesa · Advances in economics, business and management research/Advances in Economics, Business and Management Research · 3
2004 · Didik Wahjudi, Roche Alimin, et al. · Journal of Mechanical Engineering (Institute of Research and Community Outreach Petra Christian University) · 2
2000 · Gan Shu San, Didik Wahjudi, et al. · Journal of Mechanical Engineering (Institute of Research and Community Outreach Petra Christian University) · 2