@ARTICLE{Lach_Stanisław_Using_2017,
 author={Lach, Stanisław and Opyrchał, Leszek},
 number={No 33},
 journal={Journal of Water and Land Development},
 howpublished={online},
 year={2017},
 publisher={Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute},
 title={Using the modified scalar product approach for testing the direction of seepage through the earth-fill dam in Pieczyska},
 URL={http://journals.pan.pl/Content/101873/PDF/Lach%20Opyrchal.pdf},
 keywords={earth-fill dams, monitoring, piezometers, safety of hydraulic structures, scalar product},
}