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