1. Y.M. Zhu, Z.Q. Xu: Journal of Yangtze River Scientific Research Institute. Vol. 20 (2003), p.19. (In Chinese).
2. De Schutter G: Computers and structures. Vol. 80 (2002), p. (2035).
3. BAZANT Z P, WITTMANN F H, in: Creep and shrinkage in concrete structures. Wiley-interscience Publication, (1982).
4. BAZANT Z P: Materials and Structures, RILEM, Paris, (1970), P. 19: 3.
5. P. Xu, Y.M. Zhu: Journal of Hydraulic Engineering, Vol. 40 (2009), p.969. (In Chinese).