1. Jeepneys and other means of transportation;DelaCova,2017
2. On-board Exhaust Emission Measurements of Vehicles Using a Portable Emission Measure System;Yanwei,2015
3. The Influence of Oxidation Catalysts on NO2 in Diesel Exhaust
4. Black smoke from Exhaust—Engine burning oil;Mester,2016
5. Exhaust smoke color diagnosis: Blue, black, or white?;Lampe,2016