1. Ludwig Prandtl, Induced drag of multiplanes, “March, 1924."NACA TN no. 182. From Technische Berichte, Vol. 3, No. 7, pp. 309–315 (1918).
2. T. von Kármán, J.M. Burgers, General Aerodynamic Theory – Perfect Fluids, Aerodynamic Theory, (Dover, New York, 1963), Vol.II.
3. Stephen A. Andrews and Ruben E. Perez, Parametric Study of Box-Wing Aerodynamics for Minimum Drag Under Stability and Maneuverability Constraints. 33rd AIAA Applied Aerodynamics Conference 22, (Dallas, 26 June 2015).
4. Alexander Somerville, Matthew Marino, Glenn Baxter, Graham Wild, Understanding box wing aircraft: essential technology to improve sustainability in the aviation industry, School of Aerospace Mechanical and Manufacturing Engineering, RMIT University, Melbourne, Australia, (16 March 2016). B. R. Jackson and T. Pitman, U.S. Patent No. 6,345,224 (8 July 2004)
5. John D. Anderson Jr., Aircraft Performance and Design, (1999).