Ari Lievonen

NOx reduction by urea in the presence of NO2 on metal substrated SCR catalysts for heavy-duty vehicles

Teuvo Maunula, Matti Härkönen, Reijo Lylykangas, 2003 .

Low Emission Three-way Catalyst and OSC Material Development for OBD Diagnostics

Teuvo Maunula, Keijo Torkkell, Matti Härkönen, 1999 .