Penentuan kostanta kestabilan kompleks asam humat dengan logam Co(II), Cd(II), Zn(II) dari lokasi proyek lahan gambut, Palangkaraya, Kalimantan Tengah

Fotodegradasi asam humat dan kompleks Fe3+, Pb2+ dan Cu2+ dengan katalis TiO2 yang diimmobilisasi pada dinding kolom gelas

Humic substances in the aquatic and terrestrial environment : proceedings of an international symposium, Linköping, Sweden, August 21-23, 1989 / editor B. Allard, H. Borén, A. Grimvall

Humic substances in soil, sediment, and water : geoshemistry, isolation, and characterization/ edited by: George R. Aiken...(et al.)

Organic acids in aquatic ecosystems : report of the Dahlem Workshop on Organic Acids in Aquatic Ecosystems, Berlin 1989, May 7-12