1. Addison M. B. and Petry T. M.(1998). “Optimizing and multi-agent multi-injected swell modifier.” Transp. Res. Rec. 1611 Transportation Research Board 38–45.
2. Allison G. E. Kefauver M. and Roller E. M. (1953). “Ammonium fixation in soils.” Proc. Soil Science Society of America Vol. 17 107–110.
3. Altmeyer W. T. (1955). “Discussion of engineering properties of expansive clays.” Proc. ASCE 81 (separate no. 658) 17–19.
4. Anday M. C. (1961). “Accelerated curing for lime-stabilized soil.” HRB Bulletin 304 Highway Research Board National Research Council Washington D.C. 1–13.
5. Anday M. C. (1963). “Curing lime-stabilized soils.” HRB Record 29 Highway Research Board National Research Council Washington D.C. 13–26.