LJM Rothkrantz, D Datcu, I Lefter, AG Chitu (2009), Assessment of the emotional state during e-learning, s.n. (Eds.), In E-learning - innovations and trends p.77-82, University of Ruse.

LJM Rothkrantz, D Datcu, I Lefter, AG Chitu (2009), Assessment of the emotional states of students during e-learning, s.n. (Eds.), In Proceedingsof the International conference on e-learning and the knowledge society-e-learning'09 p.71-76, s.n..

MG Walle, LJM Rothkrantz (2009), Basora Enterprise Search: A new system for enterprise information retrieval, s.n. (Eds.), In Proceedings of the international conference on E-Learning and the knowledge society p.26-35, University of Ruse.

E Daman, IJJ Borm, Z Yang, LJM Rothkrantz (2009), Collaborative robot agents for AIBO soccer, In International Journal of Intelligent Games and Simulation Volume 5 p.14-25.

P Wiggers, LJM Rothkrantz (2009), Combining topic information and structure information in a dynamic language model, V Matousek, P Mautner (Eds.), In Text, Speech and Dialogue p.218-225, Springer.

S Fitrianie, LJM Rothkrantz (2009), Computed ontology-based situation awareness of multi-user observations, J Landgren, S Jul (Eds.), In Proceeding of the 6th International ISCRAM Conference p.1-13, ISCRAM.

LJM Rothkrantz, Z Yang (2009), Crowd control by multiple cameras, J Landgren, S Jul (Eds.), In Proceeding of the 6th International ISCRAM Conference p.1-11, ISCRAM.

S Fitrianie, LJM Rothkrantz (2009), Database for a visual language-based application, J Schreurs (Eds.), In Euromedia 2009 p.10-17, Eurosis.

M van den Haak, S Panic, LJM Rothkrantz (2009), Detecting stress using eye blinks during game playing, L Breitlauch (Eds.), In 10th international conference on intelligent games and simulation p.75-82, Reproduct nv.

LJM Rothkrantz (2009), Distributed human perception networks in a crisis environment., s.n. (Eds.), In Eatis2009, Euro American Conference on Telematics & Information Systems. p.237-244, Artea Graphics.