1. A Study of the Response of an Airplane Landing Gear Using the Differential Analyzer
2. 4Walls, J. H. "Investigation of the Air-Compression Process - During Drop Tests of an Oleopneumatic Landing Gear," NACA TN 2477,1951.
3. 5Milwitzky, B., and Cook, F. E. "Analysis of Landing Gear Behavior," NACA Report 1154, 1953.