The following publications are possibly variants of this publication:
- 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]
- The second variation at a bang-bang extremalAndrei A. Agrachev, Gianna Stefani, PierLuigi Zezza. eucc 2001: 1716-1720 [doi]
- Sufficient optimality conditions for a bang-bang trajectoryLaura Poggiolini, Gianna Stefani. cdc 2006: 6624-6629 [doi]
- Minimum time optimality of a bang-bang trajectoryLaura Poggiolini, Gianna Stefani. cdc 2002: 1922-1925 [doi]