Description  Claims  Drawing  Cited references 

US20070186560A1   [0008] 
US2005028534A1   [0009] 
SU1105737A1   [0010] 
US2007186560A   [0011] 

Adv. Cryo. Engi.   [0006] 
Adv. Cryo. Engi.   [0007]