A block sparse approximate inverse with cutoff preconditioner for semi-sparse linear systems derived from Molecular Orbital calculations. - Ikuro Yamazaki; Masayuki Okada; Hiroto Tadano; Tetsuya Sakurai; Keita Teranishi (JSIAM Lett., 2010)

A convergence improvement of the BSAIC preconditioner by deflation. - Ikuro Yamazaki; Hiroto Tadano; Tetsuya Sakurai; Keita Teranishi (JSIAM Lett., 2011)