Reference:
He, W., Burtsev, A., Theofilis, V., Zhang, K., Taira, K., Hayostek, S., Amitay, M., "Wake Dynamics of Finite Aspect Ratio Wings. Part III: TriGlobal Linear Stability Analysis."
AIAA Scitech, AIAA-2019-1386, San Diego, CA, January 7-11, 2019