  A q-analogue of Erdelyi's formula for the Hankel transform of the product of
Laguerre polynomials is derived using the quantum linking groupoid between the
quantum SU(2) and E(2) groups. The kernel of the q-Hankel transform is given by
the 1\varphi1-q-Bessel function, and then the transform of a product of two
Wall polynomials times a q-exponential is calculated as a product of two Wall
polynomials times a q-exponential.
