@ARTICLE{_Letter_2013, number={No 2}, journal={Archives of Civil Engineering}, pages={265-271}, howpublished={online}, year={2013}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, type={Artykuły / Articles}, title={Letter to the Editor of Archives of Civil Engineering (Ace)}, URL={http://www.journals.pan.pl/Content/83878/mainfile.pdf}, }