Ghosh, P.; Brand, W. A.: Stable isotope ratio mass spectrometry in global climate change research. International Journal of Mass Spectrometry 228 (1), pp. 1 - 33 (2003)

Qi, H. P.; Coplen, T. B.; Geilmann, H.; Brand, W. A.; Böhlke, J. K.: Two new organic reference materials for δ¹³C and δ¹⁵N measurements and a new value for the δ¹³C of NBS 22 oil. Rapid Communications in Mass Spectrometry 17 (22), pp. 2483 - 2487 (2003)

Röckmann, T.; Kaiser, J.; Brenninkmeijer, C. A. M.; Brand, W. A.: Gas chromatography/isotope-ratio mass spectrometry method for high-precision position-dependent ¹⁵N and ¹⁸O measurements of atmospheric nitrous oxide. Rapid Communications in Mass Spectrometry 17 (16), pp. 1897 - 1908 (2003)

Schmidt, H.-L.; Werner, R. A.; Eisenreich, W.: Systematics of ²H patterns in natural compounds and its importance for the elucidation of biosynthetic pathways. Phytochemistry Reviews 2 (1-2), pp. 61 - 85 (2003)

Verkouteren, R. M.; Assonov, S.; Klinedinst, D. B.; Brand, W. A.: Isotopic metrology of carbon dioxide. II. Effects of ion source materials, conductance, emission, and accelerating voltage on dual-inlet cross contamination. Rapid Communications in Mass Spectrometry 17 (8), pp. 777 - 782 (2003)

Werner, R. A.: The online ¹⁸O/¹⁶O analysis: Development and application. Isotopes in Environmental and Health Studies 39 (2), pp. 85 - 104 (2003)

Czimczik, C. I.; Preston, C. M.; Schmidt, M. W. I.; Werner, R. A.; Schulze, E.-D.: Effects of charring on mass, organic carbon, and stable carbon isotope composition of wood. Organic Geochemistry 33 (11), pp. 1207 - 1223 (2002)

Fronza, G.; Fuganti, C.; Schmidt, H.-L.; Werner, R. A.: The δ¹⁸O-value of the p-OH group of L-tyrosine permits the assignment of its origin to plant or animal sources. European Food Research and Technology 215 (1), pp. 55 - 58 (2002)

Lloyd, J.; Langenfelds, R. L.; Francey, R. J.; Gloor, M.; Tchebakova, N. M.; Zolotoukhine, D.; Brand, W. A.; Werner, R. A.; Jordan, A.; Allison, C. A. et al.; Zrazhewske, V.; Shibistova, O.; Schulze, E.-D.: A trace-gas climatology above Zotino, central Siberia. Tellus, Series B - Chemical and Physical Meteorology 54 (5), pp. 749 - 767 (2002)

Styles, J. M.; Raupach, M. R.; Farquhar, G. D.; Kolle, O.; Lawton, K. A.; Brand, W. A.; Werner, R. A.; Jordan, A.; Schulze, E.-D.; Shibistova, O. et al.; Lloyd, J.: Soil and canopy CO₂, ¹³CO₂, H₂O and sensible heat flux partitions in a forest canopy inferred from concentration measurements. Tellus, Series B - Chemical and Physical Meteorology 54 (5), pp. 655 - 676 (2002)