R. Zaplata, K. Bakula, W. Ostrwoski. "TRANSFORMATION METHODS AND ALS-DATA VISUALIZATION IN THE STUDIES OF HISTORICAL CHARCOAL PILES." International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2014, Book 3 (2014). https://doi.org/10.5593/sgemsocial2014/b31/s9.053