Certified reference materials (CRMs) for quality control of trace-element determinations in wastewaters

1. Segura, M.
2. Cámara, C.
3. Madrid, Y.
4. Rebollo, C.
5. Azcárate, J.
6. Kramer, G.N.
7. Gawlik, B.M.
8. Lamberty, A.
9. Quevauviller, Ph.