Paulo Favas (2013). MULTIVARIATE ANALYSIS APPLIED TO THE HYDROCHEMICAL STUDY OF ACID MINE DRAINAGES AND SURROUNDINGS SUPERFICIAL WATERS (NORTH PORTUGAL). SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING. https://doi.org/10.5593/sgem2013/bb2.v1/s08.022