A continuous-time learning rule for memristor-based recurrent neural networks G. Zoppo, F. Marrone, F. Corinto (2019) A continuous-time learning rule for memristor-based recurrent neural networks, In: 2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019, pp. 494-497, ISBN: 978-1-7281-0996-1