@inproceedings{inproceedingseef2257b, title = {Spectroscopic characterization of laponite xls aqueous colloidal clay dispersions employing tetrakis(n-methyl-2-pyridyl) porphyrin}, author = {Dias, Patrícia Moura and Constantino, Vera Regina Leopoldo and Faria, Dalva Lúcia Araújo de}, year = {2003}, publisher = {Elsevier}, booktitle = {International Clay Conference} }