@article{834701, author = {K Szymaniec and W Chalupczak and S Weyers and R. Wynands and Eite Tiesinga and Carl Williams}, title = {Manipulation of the Collisional Frequency Shift in Caesium Fountain Clocks}, year = {2007}, number = {6673}, month = {2007-09-13 00:09:00}, publisher = {SPIE Optics and Photonics Conference}, language = {en}, }