  In earlier papers there were given formulae for the Poincare series of
multi-index filtrations on the ring of germs of functions of two variables
defined by collections of valuations corresponding to (reducible) plane curve
singularities and by collections of divisorial ones. It was shown that the
Poincare series of a collection of divisorial valuations determines the
topology of the collection of divisors. Here we give a formula for the Poincare
series of a general collection of valuations on the ring of germs of functions
of two variables centred at the origin and prove a generalization of the
statement that the Poincare series determines the topology of the collection.
