TY - RPRT TI - Effect of noble gas mixtures on the performance of regenerative-type cryocoolers analytical estimate AU - Daney, David E PY - 1990 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 90-3936 DO - 10.6028/NIST.IR.90-3936 ER -