1. D. Trines The HERA Cold Bore Vacuum System DESY HERA 85 22
2. F. Willeke F. Zimmermann
3. M. Böhnert D. Brauer S. Chermenin H. Doruch D. Hoppe D. Hubert A. Ladage Li Cheng Fu K. Pieczora K. Rehlich Z. Sanok D. Trines The Insulating Vacuum Systems of the HERA Proton Storage Ring DESY HERA 91 22
4. M. Böhnert D. Hoppe K. Rehlich C. Tiedemann The Vacuum Control and Data Acquisition System of the HERA Proton Ring
5. C. Benvenuti R. S. Calder Low Pressure Cryopumping of Hydrogen CERN-ISR-VA 69 78