Before revision: In addition, some scholars also cite the Kalman filter invented by Rudolf E. Kalman and the theory of the maximum formulated by Lev Semenovich Pontryagin as forerunners of the recursive approach in economics.
After revision: In addition, some scholars also cite the Kálmán filter invented by Rudolf E. Kalman and the theory of the maximum formulated by Lev Semenovich Pontryagin as forerunners of the recursive approach in economics.