Dirichlet's Principle for Harmonic Functions/Also known as

Dirichlet's Principle for Harmonic Functions: Also known as

Dirichlet's Principle for Harmonic Functions is also known just as Dirichlet's Principle.

However, there is more than one theorem named such, so its full name is recommended on $\mathsf{Pr} \infty \mathsf{fWiki}$.

Some sources give this as the Dirichlet Principle.