1. Alton, K., Mitchell, I. M.: Optimal path planning under different norms in continuous state spaces. In Proceedings 2006 IEEE International Conference on Robotics and Automation, 2006. ICRA 2006, pp. 866–872 (2006)
2. Alton, K., Mitchell, I.M.: Fast marching methods for stationary Hamilton-Jacobi equations with axis-aligned anisotropy. SIAM J. Numer. Anal. 47(1), 363–385 (2009)
3. Bardi, M., Capuzzo-Dolcetta, I.: Optimal Control and Viscosity Solutions of Hamilton-Jacobi-Bellman Equations. Modern Birkhäuser Classics, Birkhäuser Boston (2008)
4. Barles, G., Souganidis, P.E.: Convergence of approximation schemes for fully nonlinear second order equations. Asymp. Anal. 4, 271–283 (1991)
5. Barles, G.: An Introduction to the Theory of Viscosity Solutions for First-Order Hamilton-Jacobi Equations and Applications, pp. 49–109. Springer, Berlin (2013)