1. Proportional optimal orthogonalization of measured modes
2. FLUTTER CALCULATION BASED ON GVT-RESULTS AND THEORETICAL MASS MODEL
3. Kiessling, F. (1989), “On simplified analytical flutter clearance procedures for light aircraft”, DLR‐Forschungsbericht, Vol. 15, pp. 56‐89.
4. Chajec, W. (1993), “Critical flutter speed of sailplanes calculated for high altitude: examples of computation”, Technical Soaring, Vol. XVIII No. 3, pp. 69‐72.
5. Goraj, Z., Frydrychewicz, A. Świtkiewicz, R., Hernik, B., Gadomski, J., Goetzendorf‐Grabowski, T., Figat, M., Suchodolski, St. and Chajec, W. (2004), “High altitude long endurance unmanned aerial vehicle of a new generation – a design challenge for a low cost, reliable and high performance aircraft”, Bulletin of Polish Academy of Sciences, Technical Sciences, Vol. 52 No. 3.