SIGMUND, M.; RICHTER, D. Application of Voice Technologies for Ambient Assisted Living. In Advances in Robotics. DSP. Sydney: iConcept Press, 2012. p. 1-18. ISBN: 978-1-922227-05- 8.

SIGMUND, M. Influence of Psychological Stress on Formant Structure of Vowels. Elektronika Ir Elektrotechnika, 2012, vol. 2012 (18), no. 10, p. 45-48. ISSN: 1392- 1215.

ZELINKA, P.; SIGMUND, M.; SCHIMMEL, J. Impact of vocal effort variability on automatic speech recognition. Speech Communication, 2012, vol. 54, no. 6, p. 732-742. ISSN: 0167- 6393.

STANĚK, M.; SIGMUND, M. Comparison of Speaker Individuality in Triangle Areas of Plane Formant Spaces. In Proceedings of 24th International Conference Radioelektronika. 2014. p. 1-4. ISBN: 978-1-4799-3715- 8.