Liu, Z., T. Chotibut, C. Hillar, and S. Lin. “Biologically Plausible Sequence Learning With Spiking Neural Networks”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 02, Apr. 2020, pp. 1316-23, doi:10.1609/aaai.v34i02.5487.