TY - CONF AU - Heavner, Thomas AU - Shirley, Jon AU - Levi, F AU - Yu, Dai AU - Jefferts, Steven C2 - 2006 IEEE Intl Freq. Cont. Symp. , Miami, FL DA - 2006-01-01 LA - en PB - 2006 IEEE Intl Freq. Cont. Symp. , Miami, FL PY - 2006 TI - Frequency Biases in Pulsed Atomic Fountain Frequency Standards Due to Spurious Components in the Microwave Spectrum ER -