1. Ytterberg, Robert F., “Shrinkage and Curling of Slabs on Grade, Part I—Drying Shrinkage, Part II—Warping and Curling, and Part III— Additional Suggestions,” Concrete International, American Concrete Institute, Farmington Hills, Michigan, USA April 1987.
2. M.J. Tomlinson, Foundation Design and Construction, E.L.B.S. Longman, Singapore, 1992.
3. Austin Williams- The Distance at Which Trees Can Affect a Building is Quite Significant- Architects Journal, 7 December 2006. London UK.
4. Joint Design for Concrete Highway and Street Pavements. Portland Cement Association, Skokie, III (1980).
5. ACI Committee 116, “Cement and Concrete Terminology (ACI 116R),” American Concrete Institute, Farmington Hills, Mich., 2000, USA.