1. On the Structure of Jets from Highly Underexpanded Nozzles Into Still Air
2. Cr.scione, E. S., and Hobbs, N. P., The Prediction of Lethality Envelopes for Aircraft in Flight. Part 2. Detailed Theoretical Analyses, (unclassified title), WADC Technical Report 56-150, Part 2, Massachusetts Institute of Technology, Cambridge, Mass. October, 1958.
3. A Linearized Analysis of the Forces Exerted on a Rigid Wing by a Shock Wave
4. Hobbs, N. P., Indicial Downwash and Its Structural Effect on the Horizontal Tail, WADC Technical Rep. 56-164, Massachusetts Instituteo Technology, Cambridge, Mass.August, 1956.