Christoph Helmberg. Fixing Variables in Semidefinite Relaxations. SIAM J. Matrix Analysis Applications, 21(3):952-969, 2000. [doi]
@article{Helmberg00, title = {Fixing Variables in Semidefinite Relaxations}, author = {Christoph Helmberg}, year = {2000}, doi = {10.1137/S089547989631442X}, url = {http://dx.doi.org/10.1137/S089547989631442X}, researchr = {https://researchr.org/publication/Helmberg00}, cites = {0}, citedby = {0}, journal = {SIAM J. Matrix Analysis Applications}, volume = {21}, number = {3}, pages = {952-969}, }