CHANDRA, U., AOKI, P. E., E SILVA, J. A. R., & CASTAGNET, A. G. (1980). DETERMINATION OF VELOCITY AND DIRECTION OF GROUND WATER BY RADIOACTIVE TRACERS. Águas Subterrâneas. Recuperado de https://aguassubterraneas.abas.org/asubterraneas/article/view/23950