Any reference for$$I_{\alpha,a}=\int_{\mathbb R^n}|s|^{-\alpha}e^{-i\langle a, s\rangle}ds= ?,$$where $0<\alpha<n$ and $a\in\mathbb R^n$. Thank you in advance
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Any reference for$$I_{\alpha,a}=\int_{\mathbb R^n}|s|^{-\alpha}e^{-i\langle a, s\rangle}ds= ?,$$where $0<\alpha<n$ and $a\in\mathbb R^n$. Thank you in advance