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"On the positivity of multivariable scalar functions."
Luís Gustavo Soares Longhi, Argimiro Resende Secchi, Enrique Luis Lima (2001)
- Luís Gustavo Soares Longhi
, Argimiro Resende Secchi
, Enrique Luis Lima:
On the positivity of multivariable scalar functions. J. Frankl. Inst. 338(4): 509-516 (2001)
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