1. Effects of fan, ducting and powerplant characteristics on the cushion stability of air cushion vehicles
2. 3Ribich, W.A. and Richardson, H.H. "Dynamic Analysis of Heave Motion for a Transport Vehicle Fluid Suspension," Massachusetts Institute of Technology, Engineering Projects Laboratory Report 76110-3, Jan. 1967.
3. 4Captain, K.M. and Richardson, H.H. "Heave Dynamics of Flexible-Base Fluid Suspensions," Massachusetts Institute of Technology, Engineering Projects Laboratory Report 76110-9, Jan. 1969.