Seidl, A., Wrzaczek, S., El Ouardighi, F., & Feichtinger, G. <https://pure.iiasa.ac.at/view/iiasa/2589.html>  (2016).  Optimal career strategies and brain drain in academia.   Journal of Optimization Theory and Applications 168 (1) 268-295. 10.1007/s10957-015-0747-3 <https://doi.org/10.1007/s10957-015-0747-3>.