TY - JOUR AU - Patrick Abbott AU - Justin Chow C2 - NCSL International Measure DA - 2007-06-01 00:06:00 LA - en PB - NCSL International Measure PY - 2007 TI - Anomalous Behavior of Teflon-Based Helium Permeation Flow Standards UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=830977 ER -