T. C. Hu, Andrew B. Kahng. Every Tree is Graceful (But Some are More Graceful than Others). In Peter Gritzmann, Bernd Sturmfels, editors, Applied Geometry And Discrete Mathematics, Proceedings of a DIMACS Workshop, Providence, Rhode Island, USA, September 18, 1990. Volume 4 of DIMACS Series in Discrete Mathematics and Theoretical Computer Science, pages 355-358, DIMACS/AMS, 1990.
Abstract is missing.