Theoretical study on fulvic acid structure, conformation and aggregation Alvarez-Puebla, R. A. ; Valenzuela-Calahorro, C. ; Garrido, J. J. Abstract Publication: Science of the Total Environment Pub Date: April 2006 DOI: 10.1016/j.scitotenv.2004.11.026 Bibcode: 2006ScTEn.358..243A