TY - GEN AU - G. Zahn, A. Hofmann, H. Bayer, H. Berndt, R. Doll, W. Herz, M. Susser, E. Turnwald, B. Vogeley, W. Wiedemann T1 - TEST OF 3 DIFFERENT PUMPS FOR CIRCULATING HE-I AND HE-II CY - PY - 1992 PB - T3 - Cryogenics VL - 32 UR - http://dx.doi.org/10.1016/0011-2275(92)90119-U SN - 0011-2275