  We integrate three-loop sunrise-type vacuum diagrams in $D_0=4$ dimensions
with four different masses using configuration space techniques. The finite
parts of our results are in numerical agreement with corresponding three-loop
calculations in momentum space. Using some of the closed form results of the
momentum space calculation we arrive at new integral identities involving
truncated integrals of products of Bessel functions. For the non-degenerate
finite two-loop sunrise-type vacuum diagram in $D_0=2$ dimensions we make use
of the known closed form $p$-space result to express the moment of a product of
three Bessel functions in terms of a sum of Claussen polylogarithms. Using
results for the nondegenerate two-loop sunrise diagram from the literature in
$D_0=2$ dimensions we obtain a Bessel function integral identity in terms of
elliptic functions.
