1. Pressure probes at very low density;Enkenhus;UTIA Rep. No. 43,1957
2. Impact and static pressure measurements in high speed flows with transitional Knudson numbers;Rogers,1964
3. Studies on low density supersonic jets;Anderson,1964
4. H.I. Ashkenas, JPL Space Programs Summary No.37-15.
5. Stagnation pressure porbe for supersonic rarefied gas flows;Sankovich,1986