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)

Rothe, M.; Jordan, A.; Brand, W. A.: Trace gases, δ¹³C and δ¹⁸O of CO₂-in-air samples: Storage in glass flasks using PCTFE seals and other effects. In: Proceedings of the 12th IAEA/WMO meeting of CO₂ experts, Toronto, Sept. 2003, pp. 64 - 70 (Eds. Worthy, D.; Huang, L.) (2005)

Brand, W. A.: Mass spectrometer hardware for analyzing stable isotope ratios. In: Handbook of stable isotope analytical techniques, Vol. 1, pp. 835 - 856 (Ed. De Groot, P.). Elsevier, Amsterdam (2004)

Levin, I.; Facklam, C.; Schmidt, M. W. I.; Ramonet, M.; Ciais, P.; Xueref, I.; Langenfelds, R. L.; Allison, C.; Francey, R.; Jordan, A. et al.; Rothe, M.; Brand, W. A.; Neubert, R. E. M.; Meijer, H. A. J.; Machida, T.; Mukai, H.: Results of inter-comparison programme for analysis of "sausage" flask air samples. In: Special report, Vol. 2 (Ed. Commission, E.). TACOS (Terrestrial and atmospheric carbon observing system infrastructure) (2004)

Levin, I.; Facklam, C.; Schmidt, M. W. I.; Ramonet, M.; Ciais, P.; Langenfelds, R. L.; Allison, C.; Francey, R.; Jordan, A.; Rothe, M. et al.; Brand, W. A.; Neubert, R. E. M.; Meijer, H. A. J.; Machida, T.; Mukai, H.: 1st annual report of the TACOS project 2003. In: TACOS sausage flask intercomparison report 2002 (Ed. Commission, E.). TACOS (Terrestrial and atmospheric carbon observing system infrastructure) (2003)

Levin, I.; Langendörfer, U.; Schmidt, M.; Facklam, C.; Langenfelds, R. L.; Allison, C.; Francey, R.; Jordan, A.; Brand, W. A.; Neubert, R. E. M. et al.; Meijer, H. A. J.; Holmén, K.: EuroSiberian carbonflux: Technical Report CO₂ intercomparison. In: Report of the 11th WMO/IAEA Meeting of Experts on Carbon Dioxide Concentration and Related Tracer Measurement Techniques (Tokyo, Japan, 25. - 28. September 2001), pp. 37 - 54 (2003)