  Predominantly preliminary single and double inclusive momentum spectra of 158
AGeV Pb+Pb collisions, recently measured by the NA44 and NA49 Collaborations,
are reproduced using the relativistic hydrodynamical model HYLANDER-C. Two
different equations of state, which both contain a phase transition to a
quark-gluon plasma, can be used to reproduce the (preliminary) data. The
space-time geometries in the two calculations differ strongly. However, the
Bose-Einstein correlation functions of identical pion pairs do not show such a
strong, but still a significant sensitivity to the effects of the equations of
state.
