1. R. Brinkmann, G. Materlik, J. Rossbach, A. Wagner (Eds.), Conceptual design of a 500GeVe+ e− linear collider with integrated X-ray laser facility, DESY 1997-048, ECFA 1997-182.
2. A. De Roeck, D. Barber, G. Radel (Eds.), Proceedings of the Workshop on the Polarized Protons at High Energies—Accelerator Challenges and Physics Opportunities, 17–20 May, Hamburg, Germany, DESY-PROC-1999-03, 1991.
3. G. Ingelman, A. De Roeck, R. Klanner (Eds.), Proceedings of the Workshop 1995/1996 on Future Physics at HERA, Vol. 2, DESY, Hamburg, Germany, 1996.
4. M. Tigner, B.H. Wiik, F. Willeke, Proceedings of the 1991 IEEE Particle Accelerators Conference, Vol. 5, 6–9 May San Francisco, 1991, p. 2910.
5. B.H. Wiik, Proceedings of the International Europhysics Conference on High Energy Physics, 22–28 July, Marseille, France, 1983, p. 739.