E. Bougioukou, N. Toulgaridis, M. Varsamou, and T. Antonakopoulos "Hardware Acceleration on Cloud Services: The use of Restricted Boltzmann Machines on Handwritten Digits Recognition", Advances in Science, Technology and Engineering Systems Journal, vol. 3, no. 1, pp. 483–495, 2018, doi: 10.25046/aj030159.