1. Zittel W., Altmann M. A., Proceedings of the 11th World Hydrogen Energy Conference, , Veziroglu T. N., et al., Eds. (Schön & Wetzel, Frankfurt, Germany, 1996)(available at www.hydrogen.org/knowledge/vapour.htm).
2. Delucchi M. A., A Lifecycle Emissions Model (LEM): Lifecycle Emissions from Transportation Fuels, Vehicles, and Modes, Electricity Use, Heating and Cooking Fuels, and Materials (UCD-ITS-RR-03-04, Institute of Transportation Studies-Davis, University of California, Davis, 2003).
3. Zittel W., Altmann M., Proceedings of the 11th World Hydrogen Energy Conference, , Veziroglu T. N., et al., Eds. (Schön & Wetzel, Frankfurt, Germany, 1996)(available at www.hydrogen.org/knowledge/vapour.html).
4. Liquid hydrogen: Potential, problems, and a proposed research program
5. Zittel W. personal communications. Even if LH 2 did become a major item of commerce a Québec-Hamburg LH 2 marine transport system could readily have zero boil-off losses as described by (12).