Area and energy optimized multilayer QCA-based 4N-bit scalable multiplier (M4N-MUL)Vaibhav Jain, Devendra Kumar Sharma and Hari Mohan GaurEur. Phys. J. Plus, 137 11 (2022) 1281DOI: https://doi.org/10.1140/epjp/s13360-022-03486-w