Kalmár, F., Halász, E., Csáky, I.: Balancing of central heating systems. In: Vykurovanie 2009 : Alternatívne zdroje energie a systémy zásobovania budov teplom : Zborník prednások zo 17. medzinárodnej konferencie : Tatranské Matliare, 2-6. 3. 2009 . Ed.: Petras, Dusan, Slovenská spolocnost pre techniku prostredia, Bratislava, 423-426, 2009.
Halász, E.: Hűtés geotermikus energiával. In: 15th "Building Services, Mechanical and Building Industry Days" : International Conference : Debrecen, ... 15-16 October 2009. Szerk.: Kalmár Ferenc, Kocsis Imre, Csomós György, Csáki Imre, Debreceni Egyetem, Debrecen, 94-103, 2009.
Halász, E., Kalmár, T.: Spatial optimization of heating seatback. In: 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings : Suistanable built Environment : Oct. 28-31, 2007, Sendai International Centre, Sendai, Japan, [Tohoku University], Sendai- Japan, , 2007. ISBN: 9784861630705
Kalmár, F., Halász, E., Csáky, I.: Balancing of central heating systems. In: Vykurovanie 2009 : Alternatívne zdroje energie a systémy zásobovania budov teplom : Zborník prednások zo 17. medzinárodnej konferencie : Tatranské Matliare, 2-6. 3. 2009 . Ed.: Petras, Dusan, Slovenská spolocnost pre techniku prostredia, Bratislava, 423-426, 2009.
Halász, E.: Hűtés geotermikus energiával. In: 15th "Building Services, Mechanical and Building Industry Days" : International Conference : Debrecen, ... 15-16 October 2009. Szerk.: Kalmár Ferenc, Kocsis Imre, Csomós György, Csáki Imre, Debreceni Egyetem, Debrecen, 94-103, 2009.
Halász, E., Kalmár, T.: Spatial optimization of heating seatback. In: 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings : Suistanable built Environment : Oct. 28-31, 2007, Sendai International Centre, Sendai, Japan, [Tohoku University], Sendai- Japan, , 2007. ISBN: 9784861630705
Kalmár, F., Halász, E.: Consumul energetic in sectorul rezidential. In: Instalatii pentru constructii si confortul ambiental : Conferintia cu participare internationalia 22-23. aprilie 2004. Timisoara-Romania.. Ed.: Adrian Retezan, Ioan Sarbu, Ioan Borza, Mihai Cinca, Editura Politechnia, Timisoara, 67-76, 2004.
Halász, E., Kalmár, F.: Optimization of operational parameters in district heating systems. In: Environmentally friendly building in Europe [elektronikus dokumentum] : EGCN conference, 21-22 April 2004, Budapest / [spons. by Budapest University of Technology and Economics etc.], Budapest University of Technology and Economics, [Budapest], , 2004.
Halász, E., Kalmár, F.: Primary energy saving possibilities in district heating systems. In: Instalatii pentru constructii si confortul ambiental : Conferintia cu participare internationalia 22-23. aprilie 2004. Timisoara-Romania. Ed.: Adrian Retezan, Ioan Sarbu, Ioan Borza, Mihai Cinca, Editura Politechnia, Timisoara, 344-355, 2004.