1. Discrete-state phasor neural nets;Noest;Phys. Rev. A,1988
2. Phasor neural networks;Noest,1988
3. Proposal of fully complex-valued neural networks;Hirose,1992
4. Activation functions for neural networks in the complex domain;Georgiou,1992
5. A complex numbered version of the back-propagation algorithm;Nitta,1993