Samer Alsammarraie, & Nazar K. Hussein. (2023). A New Hybrid Grasshopper Optimization - Backpropagation for Feedforward Neural Network Training. Tikrit Journal of Pure Science, 25(1), 118–127. https://doi.org/10.25130/tjps.v25i1.221 (Original work published 2 فبراير، 2020)