1. Passive House Institute, Information on Passive Houses, (2007), http://passiv.de/former_conferences/Passive_House_E/passivehouse.html (accessed April 5, 2015).
2. Heat recovery ventilators in multifamily residences in the arctic;Ninomura;ASHRAE Trans.,1995
3. Frost formation in rotary heat and moisture exchangers;Bilodeau;Int. J. Heat Mass Transf.,1999