1. ANSI X3.9-1978;ANSI.;ISO,1978
2. Fast floating-point processing in Common Lisp
3. ISO. 1991. ISO/IEC 1539:1991 Fortran. ISO Geneva Switzerland. ISO. 1991. ISO/IEC 1539:1991 Fortran. ISO Geneva Switzerland.
4. PRESS W. H. FLANNERY B. P. TEUKOLSKY S. A. AND VETTERING W. 1989. Numerical Recipes. Cambridge University Press Cambridge UK. PRESS W. H. FLANNERY B. P. TEUKOLSKY S. A. AND VETTERING W. 1989. Numerical Recipes. Cambridge University Press Cambridge UK.