23.
J. C. Petersen, R. E. Robertson, J. F. Branhaver, P. M. Harnsberger, J. J. Duvall, S. S. Kim, D. A. Anderson, D. W. Christiansen, H. U. Bahia, „Binder Characterization and Evaluation” vol. 1. SHRP-A-367. Strategic Highway Research Program, National Research Council, Washington D.C. 1994.