1. A class of direct methods for linear systems;Abaffy;Numer. Math.,1984
2. J. Abaffy, A. Galantai, Conjugate direction methods for linear and nonlinear systems of algebraic equations, University of Miskolc, 1981, pp. 481–501.
3. ABS Projection Algorithms, Mathematical Techniques for Linear and Nonlinear Equations;Abaffy,1989
4. Broyden method as an ABS algorithm;Adib;Publ. Univ. Miskolc, Ser. D Nat. Sci., Math.,1999
5. A direct projection method for sparse linear systems;Benzi;SIAM J. Sci. Comput.,1995