1. N.U. Ahmed, Semigroup Theory with Applications to Systems and Control (Longman Scientific and Technical UK, 1991)
2. N.U. Ahmed, Optimal control of hydrodynamic flow with possible application to artificial heart. Dyn. Syst. Appl. 1, 103–120 (1992)
3. N.U. Ahmed, Optimal control of turbulent flow as measure solutions. Int. J. Comput. Fluid Dyn. 11(1–2), 169–180 (1998)
4. N.U. Ahmed, Generalized Functionals of Brownian Motion and Their Applications: Nonlinear Functionals of Fundamental Stochastic Processes (World Scientific, 2012)
5. N.U. Ahmed, Optimal control of reaction diffusion equations with potential applications to biomedical systems. J. Abstract Differential Equations Appl. 8(1), 48–70 (2017)