AW Wojdel, JC Wojdel, LJM Rothkrantz (1999), ASCI'99: proceedings, M Boasson, JA Kaandorp, JFM Tonino, MG Vosselman (Eds.), In Dual-view recognition of emotional facial expressions p.191-198, Advanced School for Computing and Imaging.

M Pantic, LJM Rothkrantz (1999), Ambiguous data in automatic facial expression analysis, M Boasson, JA Kaandorp, JFM Tonino, MG Vosselman (Eds.), In ASCI'99: proceedings p.125-132, Advanced School for Computing and Imaging.

M Pantic, LJM Rothkrantz (1999), An expert system for multiple emotional classification of facial expressions, N Bourbakis, DC Martin (Eds.), In Proceedings p.113-120, IEEE.

JC Wojdel, AW Wojdel, LJM Rothkrantz (1999), Analysis of facial expressions based on silhouettes, M Boasson, JA Kaandorp, JFM Tonino, MG Vosselman (Eds.), In ASCI'99: proceedings p.199-206, Advanced School for Computing and Imaging.

LJM Rothkrantz, JC Wojdel, AW Wojdel (1999), Analysis of facial expressions using silhouettes, W Hahn, E Walther-Klaus, J Knop (Eds.), In Euromedia'99: featuring webtec-mediatec,comtec-aptec. Proceedings p.98-105, Society for Computer Simulation International.

B Raducanu, M Pantic, LJM Rothkrantz, M Graña (1999), Automatic eyebrow tracking using boundary chain codes, M Boasson, JA Kaandorp, JFM Tonino, MG Vosselman (Eds.), In ASCI'99: proceedings p.137-143, Advanced School for Computing and Imaging.

LJM Rothkrantz, M André (1999), Redundancy and ambiguity in multimodal human computer interaction, W Hahn, E Walther-Klaus, J Knop (Eds.), In Euromedia'99: featuring webtec-mediatec, comtec-aptec. Proceedings p.106-111, Society for Computer Simulation International.

LJM Rothkrantz, M André, B Sletterink (1999), Speech based, multimodal humancomputer interaction, R Poptapova (Eds.), In SPECOM'99: proceedings p.88-91, Russian Agricultual Academic Press.

LJM Rothkrantz, D Nollen (1999), Speech recognition using Elman neural networks, V Matousek, P Mautner, J Ocelíková, P Sojka (Eds.), In Text, speech and dialogue: proceedings p.146-151, Springer.

GPR van Montfort, J Bruten, D Cliff, LJM Rothkrantz (1998), Arbitrageurs in segmented markets, In CEFES'98 p.1-6, s.n..