1. Dunham, R.E., Holbrook, G.T., Mantay, W.R., Campbell, R.L., Van Gunst, R.W.: Flight-test experience of a helicopter encountering an airplane trailing vortex. 32nd Annual National V/STOL Forum of the American Helicopter Society, Washington, DC (1976)
2. Mantay, W.R., Holbrook, G.T., Campbell, R.L., Tamaine, R.L.: Helicopter response of an airplane’s trailing vortex. J. Aircr. 14(4), 357–363 (1977)
3. Saito, S., Azuma, A., Kawachi, K., Okuno, Y., Hasegawa, T.: Numerical simulations of dynamic response of fixed and rotary wing aircraft to a large airplane wake. 13th European Rotorcraft Forum, Arles (1987)
4. Azuma, A., Saito, S., Kawachi, K.: Response of a helicopter penetrating the tip vortices of a large airplane. VERTICA 11(1), 65–76 (1987)
5. Turner, G.P., Padfield, G.D., Harris, M.: Encounters with aircraft vortex wakes; the impact on helicopter handling qualities. J. Aircr. 39(5), 839–849 (2002)