Novello, V. F., Cruz, F. W., Karmann, I., Burns, S. J., Stríkis, N. M., Vuille, M., Cheng, H., Lawrence Edwards, R., Santos, R. V, Frigo, E. and Barreto, E. A. S.: Multidecadal climate variability in Brazil’s Nordeste during the last 3000 years based on speleothem isotope records, Geophys. Res. Lett., 39(23), n/a-n/a, 2012.