1. An excellent treatment of the entire field of cryocoolers can be found in G. Walker, Cryocoolers: Parts I and II, Plenum Press, New York (1983).
2. auJ.E. Zimmerman, Cryogenics for SQUIDs. “SQUID 80: Superconducting Quantum Devices and their Applications,” H. D. Hahlbohm and H. Lubbig, eds., Walter de Gruyter, Berlin, pp. 423–443 (1980)
3. C. Winter, S. Gygax, K. Myrtle and R. Barton, Proc. of the Third Cryocooler Conference, NBS Special Publication 698, U. S. Government Printing Office, Washington, DC p. 26(1985).
4. J. E. Zimmerman an D. B. Sullivan, NBS technical note 1049, U. S. Government Printing Office, Washington, DC (1982).
5. J. E. Zimmerman and R. Radebaugh. NBS Special Publication SP-508 U. S. Government Printing Office, Washington, DC, p.59, (1978).