Koller, Thomas (2007) Design, development, implementation and evaluation of a purilingual ICALL system for romance languages aimed at advanced learners. PhD thesis, Dublin City University.

Keogh, Katrina A., Koller, Thomas, Ward, Monica ORCID: 0000-0001-7327-1395, Uí Dhonnchadha, Elaine and van Genabith, Josef ORCID: 0000-0003-1322-7944 (2004) CL for CALL in the primary school. In: eLearning for Computational Linguistics and Computational Linguistics for eLearning. International Workshop in Association with COLING 2004., 23-27 Aug. 2004, Geneva, Switzerland..

Greene, Cara N., Keogh, Katrina A., Koller, Thomas, Wagner, Joachim ORCID: 0000-0002-8290-3849, Ward, Monica ORCID: 0000-0001-7327-1395 and van Genabith, Josef (2004) Using NLP technology in CALL. In: InSTIL/ICALL 2004 Symposium on Computer Assisted Learning, 17-19 June, 2004, Venice, Italy. ISBN 88-8098-202-8

Koller, Thomas (2003) Knowledge-based intelligent error feedback in a Spanish ICALL system. In: AICS 2003 - 14th Irish Artificial Intelligence and Cognitive Science, 17-19 September 2003, Dublin , Ireland.