1. An alternating digital tree (ADT) algorithm for 3D geometric searching and intersection problems;Bonet;Int. J. Numer. Meth. Eng.,1991
2. Cleary , P.W. N. Stokes and J. Hurley 1997 Efficient collision detection for three dimensional super-ellipsoid particles Proc. 8th International Computational Techniques and Applications Conference
3. An augmented spatial digital tree algorithm for contact detection in computational mechanics;Feng;Int. J. Numer. Meth. Eng.,2002
4. Multigrid contact detection method;He;Physical Review E,2007