TY - CONF AU - Paul Kunz AU - Thomas Heavner AU - Steven Jefferts C2 - Proc. 2008 PTTI Conf., Reston, VA DA - 2008-12-01 LA - en PB - Proc. 2008 PTTI Conf., Reston, VA PY - 2008 TI - Progress on a portable rubidium fountain frequency standard UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901230 ER -