@ARTICLE{Kukela_A._Non-destructive_2013, author={Kukela, A. and Seglins, V.}, volume={Vol. 30}, number={Iss. 2}, journal={Studia Quaternaria}, howpublished={online}, year={2013}, publisher={Committee for Quaternary Research PAS}, publisher={Institute of Geological Sciences PAS}, title={Non-destructive methods for evaluation of the state of preservation in historical stone monuments:the case study of the Step Pyramid in Saqqara}, URL={http://sp.czasopisma.pan.pl/Content/98290/mainfile.pdf}, }