1. The joined wing aircraft;Wolkovitch;J. Aircr.,1986
2. L. Prandtl, Induced Drag of Multiplanes, Technical Report TN 182, NACA, reproduction of Der induzierte Widerstand von Mehrdeckern. Technische Ber. 3, 1918 (March 1924), pp. 309–315
3. Optimization of joined-wing aircraft;Gallman;J. Aircr.,1993
4. J.W. Gallman, I. Kroo, JWOPT – An Optimization and Analysis Program for Joined Wing and Conventional Aircraft Structures, Technical Report NASA-CR-197018, NASA, January 1988.
5. Structural optimization for joined-wing synthesis;Gallman;J. Aircr.,1996