Let $\mathbb R_{0,n}$ be the Clifford algebra of the
antieuclidean vector space of dimension $n$. The aim is to built a
function theory analogous to the one in the $\mathbb C$ case. In the
latter case, the product of two holomorphic functions is holomorphic,
this fact is, of course, of paramount importance. Then it is necessary
to define a product for functions in the Clifford context.
But, non-commutativity is inconciliable with product of
functions. Here we introduce a product which is commutative and we
compute some examples explicitely.