1. IIHR-Hydroscience & Engineering; University of Iowa; 100 Stanley Hydraulics Laboratory; Iowa City; Iowa; USA
2. Department of Biology; Federal University of Lavras; Lavras; Minas Gerais; Brazil
3. Environmental Laboratory; US Army Engineer Research & Development Center; CENWP-EC-HD, PO Box 2946; Portland; Oregon; USA
4. Environmental Laboratory; US Army Engineer Research & Development Center; CEERD-EP-W; Vicksburg; Mississippi; USA
5. University of São João del Rei; Campus Alto Paraopeba; Ouro Branco; Minas Gerais; Brazil
6. IIB-INTECH; Camino de Circunvalación Laguna; Chascomus; Argentina
7. Instituto de Desarrollo Tecnológico para la Industria Química (INTEC-CERIDE); Santa Fe; Argentina