Anton A. Bykov and  Irina O. Glot and  Igor N. Shardakov and  Alexey P. Shestakov,  Investigation of Crack Formation in Ordinary Reinforced Concrete Beams and in Beams Strengthened with Carbon Fiber Sheet: Theory and Experiment.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 114(6). 781 - 788
    [viewed 19 October 2019]. Available from: