TY - JOUR AU - John Bollinger AU - D Heinzen AU - F Moore AU - Wayne Itano AU - David Wineland C2 - Physica Scripta DA - 1992-10-01 LA - en M1 - 46 PB - Physica Scripta PY - 1992 TI - Low Order Modes of an Ion Cloud in a Penning Trap UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=104861 ER -