The following publications are possibly variants of this publication:
- Strong Local Optimality for a Bang-Bang-Singular Extremal: The Fixed-Free CaseLaura Poggiolini, Gianna Stefani. siamco, 56(3):2274-2294, 2018. [doi]
- Strong Optimality for a Bang-Bang TrajectoryAndrei A. Agrachev, Gianna Stefani, PierLuigi Zezza. siamco, 41(4):991-1014, 2002. [doi]
- Strong Local Optimality for a Bang-Bang Trajectory in a Mayer ProblemLaura Poggiolini, Marco Spadini. siamco, 49(1):140-161, 2011. [doi]
- Constrained bang-bang-singular extremalsLaura Poggiolini, Gianna Stefani. cdc 2019: 1462-1467 [doi]
- The second variation at a bang-bang extremalAndrei A. Agrachev, Gianna Stefani, PierLuigi Zezza. eucc 2001: 1716-1720 [doi]