1. Brian T. Bartell and Garrison W. Cottrell. A Model of Symbol Grounding in a Temporal Environment. In IJCNN91, pages I-805–810, June 1991.
2. Jeffrey L. Elman. Finding Structure in Time. Technical Report CRX-TR-8801, Center for Research in Language, University of California, San Diego, April 1988.
3. Bunpei Irie and Mitsuo Kawato. Acquisition of Internal Representation by Multi-Layered Perceptrons (in Japanese). Technical Report NC89-15, The Institute of Electronics, Information and Communication Engineers, 1989.
4. Itsuki Noda. Overload Learning (in Japanese). Technical Report NC93-28, The Institute of Electronics, Information and Communication Engineers, 7 1993.
5. Itsuki Noda. A Model of Recurrent Neural Networks that Learn State-Transitions of Finite State Transducers. In WCNN'94-San Diego, pages IV-447–452, Jun. 1994.