TY - CONF AU - Zimmerman, J. C2 - Proc., Intl Cryogenic Engineering Conference, Helsinki, 1, FI DA - 1984-12-31 00:12:00 LA - en PB - Proc., Intl Cryogenic Engineering Conference, Helsinki, 1, FI PY - 1984 TI - Recent Developments in Low-Power Self-Contained Cryocoolers for SQUIDs ER -