TY - JOUR AU - Szymaniec, K AU - Chalupczak, W AU - Weyers, S AU - Wynands, R. AU - Tiesinga, Eite AU - Williams, Carl C2 - SPIE Optics and Photonics Conference DA - 2007-09-13 00:09:00 LA - en M1 - 6673 PB - SPIE Optics and Photonics Conference PY - 2007 TI - Manipulation of the Collisional Frequency Shift in Caesium Fountain Clocks ER -