Metal levels and foraminifera occurence in sediment cores from Guanabara Bay, Rio de Janeiro, Brazil - Kfouri, Patrícia B P; Figueira, Rubens César Lopes; Figueiredo, Ana Maria; Sousa, Silvia Helena de Mello e; Eichler, Beatriz Beck (Journal of Radioanalytical and Nuclear Chemistry, 2005)