  Let $R$ be a Hecke solution to the Yang-Baxter equation and $K$ be a
reflection equation matrix with coefficients in an associative algebra $\A$.
Let $R(x)$ be the baxterization of $R$ and suppose that $K$ satisfies a
polynomial equation with coefficients in the center of $\A$. We construct
solutions to the reflection equation with spectral parameter relative to
$R(x)$, in the form of polynomials in $K$.
