I saw the "Reduced Air Pollution ... with Pre-Heated Engines" paper mentioned in another thread, but it's no longer available through the link in the OP. If this is the same one, could the OP be updated?
https://www.witpress.com/Secure/elib.../UT98035FU.pdf
Similarly, the "REDUCED COLD START EMISSIONS THROUGH USE OF ELECTRIC ENGINE HEATERS" paper can now be found here:
http://citeseerx.ist.psu.edu/viewdoc...=rep1&type=pdf