Marshall, M. (2008). Positive polynomials and sums of squares. Providence, R.I.: American Mathematical Society.
Trích dẫn kiểu ChicagoMarshall, Murray. Positive Polynomials and Sums of Squares. Providence, R.I.: American Mathematical Society, 2008.
Deismireacht MLAMarshall, Murray. Positive Polynomials and Sums of Squares. Providence, R.I.: American Mathematical Society, 2008.
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