Jim Lawrence. Finite Unions of Closed Subgroups of the n-Dimensional Torus. 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 433-442, DIMACS/AMS, 1990.
@inproceedings{Lawrence90, title = {Finite Unions of Closed Subgroups of the n-Dimensional Torus}, author = {Jim Lawrence}, year = {1990}, researchr = {https://researchr.org/publication/Lawrence90}, cites = {0}, citedby = {0}, pages = {433-442}, booktitle = {Applied Geometry And Discrete Mathematics, Proceedings of a DIMACS Workshop, Providence, Rhode Island, USA, September 18, 1990}, editor = {Peter Gritzmann and Bernd Sturmfels}, volume = {4}, series = {DIMACS Series in Discrete Mathematics and Theoretical Computer Science}, publisher = {DIMACS/AMS}, }