Stable multipoint secant methods with released requirements to points position. - Oleg Burdakov; Ursula Felgenhauer (System Modelling and Optimization, 1993)

Stability and Local Growth near Bounded-Strong Optimal Controls. - Ursula Felgenhauer (System Modelling and Optimization, 2001)

On Smoothness Properties and Approximability of Optimal Control Functions. - Ursula Felgenhauer (Ann. Oper. Res., 2001)

On Stability of Bang-Bang Type Controls. - Ursula Felgenhauer (SIAM J. Control. Optim., 2003)

Lipschitz Stability of Broken Extremals in Bang-Bang Control Problems. - Ursula Felgenhauer (LSSC, 2007)

Directional Sensitivity Differentials for Parametric Bang-Bang Control Problems. - Ursula Felgenhauer (LSSC, 2009)

Structural Stability Investigation of Bang-Singular-Bang Optimal Controls. - Ursula Felgenhauer (J. Optim. Theory Appl., 2012)

Discretization of semilinear bang-singular-bang control problems. - Ursula Felgenhauer (Comput. Optim. Appl., 2016)

Euler discretization for a class of nonlinear optimal control problems with control appearing linearly. - Walter Alt; Ursula Felgenhauer; Martin Seydenschwanz (Comput. Optim. Appl., 2018)