  Thermodynamic properties of the particles interacting through smooth version
of Stell-Hemmer interaction were studied using Wertheim's thermodynamic
perturbation theory. The temperature dependence of molar volume, heat capacity,
isothermal compressibility and thermal expansion coefficient at constant
pressure for different number of bonding sites on particle were evaluated. The
model showed water-like anomalies for all evaluated quantities, but
thermodynamic perturbation theory does not properly predict the dependence of
these properties at a fixed number of bonding points.
