1. Theory of Approximation;Achieser,1956
2. Guaranteed solution formula construction;Brown,1999
3. Quantifier Elimination and Cylindrical Algebraic Decomposition;Caviness,1998
4. Quantifier elimination for the theory of real closed fields by cylindrical algebraic decomposition;Collins,1975
5. Polynomial real root isolation using Descartes’ rule of signs;Collins,1976