Simplex free adaptive tree fast sweeping and evolution methods for solving level set equations in arbitrary dimension. - Thomas C. Cecil; Stanley J. Osher; Jianliang Qian (J. Comput. Phys., 2006)

Essentially Non-Oscillatory Adaptive Tree Methods. - Thomas C. Cecil; Stanley J. Osher; Jianliang Qian (J. Sci. Comput., 2008)