Manila : College of Engineering, De La Salle University, 2006,
Majalah, Jurnal, Buletin
Seoul : The Korean Society of Industrial and Engineeering chemistry, 2006,
Majalah, Jurnal, Buletin
Bekasi : President University, Jababeka Education Park, 2006,
Majalah, Jurnal, Buletin
Fakultas Teknik UGM,
Majalah, Jurnal, Buletin
Depok : FT-UI, 2002,
Majalah, Jurnal, Buletin