Sound Speed Frozen in Detonation

Detonation, Sound Speed Frozen in. Under the heading Chapman-Jouguet Detonation with Varying Product Composition Frozen Sound Speed , Evans 8t Ablow (Ref 4, pp 150-51) stated the following  

Refs 1) Ya.B. Zel dovich, ZhEksper i TeorerFiz 10, 542(1940) Engl transin in NACA TechMemo 1261 (1950) 2) S.R. 

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