Abed, S.A., Khalaf, A.A., Mnati, H.M. and Hanon, M.M. 2022. Optimization of mechanical properties of recycled polyurethane waste microfiller epoxy composites using grey relational analysis and taguchi method. Eastern-European Journal of Enterprise Technologies. 1, 12(115) (Feb. 2022), 48–58. DOI:https://doi.org/10.15587/1729-4061.2022.252719.