TY - CONF AU - Fortier, Tara AU - Ashby, Neil AU - Bergquist, James AU - Delaney, Marie AU - Diddams, Scott AU - Heavner, Thomas AU - Hollberg, Leo AU - Itano, Wayne AU - Jefferts, Steven AU - Kim, K AU - Oskay, Windell AU - Parker, Thomas AU - Shirley, Jon AU - Stalnaker, Jason AU - Levi, Filippo AU - Lorini, Luca C2 - Proc. 2007 Joint Mtg. IEEE Intl. Freq. Cont. Symp. and EFTF Conf., Geneva, CH DA - 2007-05-29 LA - en PB - Proc. 2007 Joint Mtg. IEEE Intl. Freq. Cont. Symp. and EFTF Conf., Geneva, CH PY - 2007 TI - Improved Limits on Variation of the Fine Structure Constant and Violation of Local Position Invariance UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50561 ER -