Tewarson, Reginald P. Sparse matrices / by Reginald P. Tewarson. - New York : Academic Press, 1973. - xv, 160 p. : ill. : 24 cm. - Mathematics in science and engineering ; vol. 99. . Bibl.p.140-151. - Index. ISBN: 0126856508 Subjects--Topical Terms: Electronic data processing.Matrices.