Biologically motivated machine intelligence. - Harold M. Hastings; Stefan Waner (SIGART Newsl., 1986)

The Hierarchical Structure of Graph Searches - Stefan Waner; Yihren Wu (Inf. Comput., 1987)

History dependent stochastic automata: A formal view of evolutionary learning. - Stefan Waner; Harold M. Hastings (Int. J. Intell. Syst., 1988)

An approach to restoration and recovery problems using parallel hierarchical neural networks. - I. Kadar; Stefan Waner; Yihren Wu; Harold M. Hastings (Neural Networks, 1988)