1. Design and construction of microminiature cryogenic refrigerators, Future Trends in Superconducting Electronics;Little,1978
2. Microminiature refrigeration - small is better;Little;Physica,1982
3. Progress in the development of microminiature refrigerators using photolithographic fabrication techniques;Hollman,1980
4. Available from MMR Technologies Inc., Suite A5, 1400 Stierlin Road, Mountain View, CA 94043