@article{oai:barrel.repo.nii.ac.jp:00000050, author = {Ishii, Toshimasa and Fujita, Hitoshi and Nagamochi, Hirosh}, issue = {1}, journal = {Theoretical Computer Science}, month = {Mar}, pages = {81--93}, title = {Minimum cost source location problem with local 3-vertex-connectivity requirements}, volume = {372}, year = {2007} }