1. Physico chemical basis of freeze drying;Rupprecht,1997
2. Freeze‐drying: Principles and practice;Nail,1993
3. Scanning electron microscopy of freeze‐dried preparations: Relationship of morphology and freeze‐drying parameters;Dawson;Dev Biol Stand,1991
4. Freeze‐drying of proteins;Pikal,1994
5. Biophysics and biochemistry at low temperature;Franks,1985