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2. Parameterization of the Environment for Transportable Numerical Software
3. FORSYTHE G.E. AND MOLER C.B. Computer Solution of Linear Algebraic Systems. Prentice- Hall Englewood Cliffs N.J. 1967 p 87. FORSYTHE G.E. AND MOLER C.B. Computer Solution of Linear Algebraic Systems. Prentice- Hall Englewood Cliffs N.J. 1967 p 87.
4. The PORT Mathematical Subroutine Library