Mohn, J., Forss, A. M., Brühlmann, S., Zeyer, K., Lüscher, R., Emmenegger, L., … Heeb, N. (2004). Time-resolved ammonia measurement in vehicle exhaust. International Journal of Environment and Pollution, 22(3), 342-356. https://doi.org/10.1504/IJEP.2004.005548