Hilkert, A. W.; Douthitt, C. B.; Schlüter, H. J.; Brand, W. A.: Isotope ratio monitoring gas chromatography / mass spectrometry of D/H by high temperature conversion isotope ratio mass spectrometry. Rapid Communications in Mass Spectrometry 13 (13), pp. 1226 - 1230 (1999)

Kornexl, B. E.; Gehre, M.; Höfling, R.; Werner, R. A.: On-line δ ¹⁸O measurement of organic and inorganic substances. Rapid Communications in Mass Spectrometry 13 (16), pp. 1685 - 1693 (1999)

Kornexl, B. E.; Werner, R. A.; Gehre, M.: Standardization for oxygen isotope ratio measurement - Still an unsolved problem. Rapid Communications in Mass Spectrometry 13 (13), pp. 1248 - 1251 (1999)

Werner, R. A.; Bruch, B. A.; Brand, W. A.: ConFlo III - An interface for high precision δ ¹³C and δ ¹⁵N analysis with an extended dynamic range. Rapid Communications in Mass Spectrometry 13 (13), pp. 1237 - 1241 (1999)

Wieser, M. E.; Brand, W. A.: A laser extraction/combustion technique for in situ δ ¹³C analysis of organic and inorganic materials. Rapid Communications in Mass Spectrometry 13 (13), pp. 1218 - 1225 (1999)

Brand, W. A.; Douthitt, C. B.; Fourel, F.; Maia, R.; Rodrigues, C.; Maguas, C.; Prohaska, T.: Gas source isotope ratio mass spectrometry (IRMS). In: Sector Field Mass Spectrometry for Elemental and Isotopic Analysis, Vol. 16, pp. 500 - 549 (2015)

Wieser, M. E.; Brand, W. A.: Isotope ratio studies using mass spectrometry. In: Reference Module in Chemistry, Molecular Sciences and Chemical Engineering (Ed. Reedijk, J.). Elsevier (2013)

Wendeberg, M.; Brand, W. A.: The Principles and Characteristics of the IRMS Instrument. In: The Encyclopedia of Mass Spectrometry, Vol.5: Elemental and Isotope Ratio Mass Spectrometry, Vol. 5, pp. 739 - 748 (Eds. Beauchemin, D.; Matthews, D. E.). Elsevier, Amsterdam (2010)

Brand, W. A.: O₂/N₂ Storage Aspects and Open Split Mass Spectrometric Determination. In: Proceedings of the 12th IAEA/WMO meeting of CO₂ experts, Toronto, Sept. 2003, pp. 146 - 151 (Eds. Worthy, D.; Huang, L.) (2005)

Ghosh, P.; Brand, W. A.: Isotopic analysis of CO₂ in air samples: Requirements for a new CO₂ in-air standard and preparation of an air-CO₂ reference mixture from calcite material. In: Proceedings of the 12th IAEA/WMO meeting of CO₂ experts, Toronto, Sept. 2003, pp. 50 - 57 (Eds. Worthy, D.; Huang, L.) (2005)