  Using the wounded nucleon, quark, and quark-diquark models, we extract the
wounded source emission functions from the PHOBOS data for d+Au collisions at
$\sqrt{s_{_{NN}}}=200$ GeV. We apply these models to compute charged particle
multiplicity distributions as functions of pseudorapidity for p+p, p+Al, p+Au,
d+Au, $^3$He+Au, Cu+Cu, Cu+Au, Au+Au, and U+U collisions at the same energy and
compare them with experimental data from the PHOBOS and PHENIX collaborations.
In symmetric collisions of heavy nuclei, the obtained distributions differ
among the tested models. On the other hand, in asymmetric collisions, all three
models give essentially the same distributions. The wounded quark-diquark and
quark models are in reasonable agreement with data for all the investigated
systems.
