On the coefficient multipliers of Bloch and Hardy spaces in a polydisk

We give a complete description for the spaces of coefficient multipliers from the spaces $H^{p,q,\alpha}$ with the mixed norm and from the Hardy classes $H^p$ to the Bloch spaces in the polydisk and also from the Hardy classes $H^p$ to $H^q$ for $0<p<1$, $p<q\leq\infty$.