%% -*-BibTeX-*- @Article{BorndoerferFerreiraMartin1998, author = "R. Bornd{\"o}rfer and C. E. Ferreira and A. Martin", title = "Decomposing Matrices into Blocks", journal = "SIAM Journal on Optimization", volume = "9", pages = "236--269", year = "1998", language = "English", }