Refining Hidden Markov Models with Recurrent Neural Networks. - T. Wessels; Christian W. Omlin (IJCNN (2), 2000)

A Hybrid System for Signature Verification. - T. Wessels; Christian W. Omlin (IJCNN (5), 2000)

Processing context-sensing picture grammars on a network. - Sigrid Ewert; T. Wessels (South Afr. Comput. J., 2001)