Piccirilio, E. M., et al. “BIMODAL FISSURAL VOLCANIC SUITES FROM THE PARANÁ BASIN (BRAZIL): K Ar AGE, Sr-ISOTOPES AND GEOCHEMISTRY”. Geochimica Brasiliensis, vol. 1, no. 1, Apr. 2011, pp. 53-69, https://geobrasiliensis.emnuvens.com.br/geobrasiliensis/article/view/3.