@ARTICLE{
author={Santa Robert,Garbai Laszlo,Fuerstner Igor},
year={2015},
title={Optimization of heat pump system},
journal={ENERGY},
volume={89},
number={},
pages={45-54},
document_type={Article},
} 

@ARTICLE{
author={Fuerstner Igor,Anisic Zoran M,Takacs Marta},
year={2012},
title={Product Configurator Self-Adapting to Different Levels of Customer Knowledge},
journal={ACTA POLYTECHNICA HUNGARICA},
volume={9},
number={4},
pages={129-150},
document_type={Article},
}