1. Branthaver, J. F.; Petersen, J. C.; Robertson, R. E.; Duvall, J. J.; Kim, S. A.; Harnsberger, P. M.; Mill, T.; Ensley, E. K.; Barbour, F. A.; Schabron, J. F. Binder Characterisation and Evaluation, Volume 2 Chemistry. SHRP Report SHRP-A-368, Strategic Highway Research Program, Washington, DC, Chapter 7, 1993.
2. van Gooswillegen, E. H.; Berger, H.; de Bats, F. Th.Proceeding of the3rd Eurobitume Symposium,September 11−13, 1985, pp 95−101.