Gauge symmetries and Noether currents in optimal control. Torres, Delfim F. M. (2003) Applied Mathematics E-Notes [electronic only]
Generalized splines in ℝ n and optimal control. Rodrigues, R.C., Torres, D.F.M. (2006) Rendiconti del Seminario Matematico. Universitá e Politecnico di Torino
Geometric optimal control and two-level dissipative quantum systems Bernard Bonnard, Dominique Sugny (2009) Control and Cybernetics
Global stability, periodic solutions, and optimal control in a nonlinear differential delay model. Ivanov, Anatoli F., Mammadov, Musa A. (2010) Electronic Journal of Differential Equations (EJDE) [electronic only]