TY - JOUR AU - John Kitching C2 - GPS World DA - 2007-11-01 LA - en M1 - 18 PB - GPS World PY - 2007 TI - Time for a Better Receiver: Chip-Scale Atomic Frequency References UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50625 ER -