Real analyticity of the canonical versal deformations of CR-structures (Q1306213)

Let \((V,0)\) be an \(n\)-dimensional normal isolated singularity in \((\mathbb{C}^N,0)\), \(S_\varepsilon^{2N-1}(0)\) the \(\varepsilon\)-sphere in \(\mathbb{C}^N\) and \(M=V\cap S_\varepsilon^{2N-1}(0)\). \(V\) induces a CR structure \((M,^\circ T'')\) on \(M\). The author shows that there is a versal family \((M,^{\varphi (t)}T'')\), \(\varphi(0)=0\), \(\varphi(t)\in^\circ \overline T''\otimes^\circ T''{}^*\), which is real analytic.