K. Iguchi et K. Aomoto, Integral representation for the grand partition function in quantum statistical mechanics of exclusion statistics, INT J MOD B, 14(5), 2000, pp. 485-506
We derive an exact integral representation for the grand partition function
for an ideal gas with exclusion statistics. Using this we show how the Wu'
s equation for the exclusion statistics appears in the problem. This can be
an alternative proof for the Wu's equation. We also discuss that singulari
ties are related do the existence of a phase transition of the system.