Yuwaraj M. Ghugal and  Ajay G. Dahake,  Flexure of Simply Supported Thick Beams Using Refined Shear Deformation Theory.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 73(1). 99 - 108
    [viewed 20 October 2021]. Available from: https://publications.waset.org/pdf/9996869.