 Numerical Methods for Least Squares Problems by Ake Bjorck, April, 1996
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 Intermediate Algebra with Early Functions and Graphing (7th Edition) by Margaret L. Lial, John Hornsby, et all 17 October, 2001
 Algebra by Saunders Mac Lane, American Mathematical Society, April, 1999
 Elementary Algebra by Harold R. Jacobs, January, 1979
 Algebra 2 by Holliday, Cuevas, et all May, 2002
 Introductory Algebra (7th Edition) by Margaret L. Lial, John Hornsby, et all 21 June, 2001
 A First Course in Abstract Algebra, Seventh Edition by John B. Fraleigh, 06 November, 2002
 Intermediate Algebra for College Students, Sixth Edition by Allen R. Angel, Richard Semmler, et all 27 February, 2003
 Precalculus: Functions and Graphs, Fifth Edition by Franklin D. Demana, Rick D. Billstein, 27 March, 2003
