1. ISO 7730 (1994) Moderate thermal environments - Determination of the PMV and PPD indices and specification of the conditions for thermal comfort, (EN ISO 7730).
2. Ivanova Tz., J. Denev, G. Pichurov, P. Stankov (2004), Thermal comfort assessment via computer simulation of the airflow in air-conditioned spaces (in Bulgarian), “Energetika” journal, issue 5-6, 2004.
3. Markov D (2003), Standards in thermal comfort, International course “Ventilation and Indoor Climate”, ed. Prof. Stankov, Pamporovo 12- 17 October 2003, ISBN 854-6782471
4. Stankov P. (2005), Optimization of air flow distribution in a ventilated room, Proc. Energy Efficient Technologies in Indoor Environment, ed. Zb. Trzeciakiewicz, Silezian University of Technology, Gliwice, Poland, September 29-30, 2005.