On the Logarithmic Coefficients of Close to Convex Functions

For $f$ analytic and close to convex in $D=\{z:\mathrm{\mid }z\mathrm{\mid }<1\}$, we give sharp estimates for the logarithmic coefficients ${\gamma }_n$ of $f$ defined by $\log \dfrac{f(z)}{z}=2\sum_{n=1}^{\infty} \gamma_{n}z^{n}$when$n=1, 2,3$.