1. Analysis of 13C and 15N CPMAS NMR-spectra of soil organic matter and composts;Almendros;FEBS Letters,1991
2. Distribution of structural units in humic substances as revealed by multi-step selective degradations and 13C-NMR of successive residues;Almendros;Soil Biology & Biochemistry,1998
3. Almendros, G., Tinoco, P., Lankes, U., Lüdemann, H.-D., González-Vila, F.J., 2000. Physical and chemical speciation of nitrogen in peat and derived humic fractions as revealed by 15N- and 13C-NMR under quantitative acquisition conditions. In: Proceedings of 2nd European Symposium: NMR in Soil Science. Freising/Weihenstephan, Germany, p. 58.
4. Rearrangement of carbon and nitrogen forms in peat after progressive thermal oxidation as determined by solid-state 13C- and 15N spectroscopy;Almendros;Organic Geochemistry,2003
5. Humic substances;Almendros,2008