1. Golub, G.H., van Loan, C.F. (1983): Matrix Computations. Johns Hopkins University Press, Baltimore
2. Householder, A.S. (1975): The Theory of Matrices in Numerical Analysis. Dover Publications, New York
3. Luenberger, D.G. (1984): Linear and Nonlinear Programming, 2nd ed. Addison-Wesley, Reading