Qin, Shanshan, et al. “A Network of Biologically Inspired Rectified Spectral Units (ReSUs) Learns Hierarchical Features Without Error Backpropagation”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 40, no. 3, Mar. 2026, pp. 2019-28, doi:10.1609/aaai.v40i3.37183.