  Two different approaches to calculate the fusion rules of the c_{p,1} series
of logarithmic conformal field theories are discussed. Both are based on the
modular transformation properties of a basis of chiral vacuum torus amplitudes,
which contains the characters of the irreducible representations. One of these
is an extension, which we develop here for a non-semisimple generalisation of
the Verlinde formula introduced by Fuchs et al., to include fusion products
with indecomposable representations. The other uses the Verlinde formula in its
usual form and gets the fusion coefficients in the limit, in which the basis of
torus amplitudes degenerates to the linear dependent set of characters of
irreducible and indecomposable representations. We discuss the effects, which
this linear dependence has on any result for fusion rules, which are calculated
from these character's modular transformation properties. We show that the two
presented methods are equivalent. Furthermore we calculate explicit BPZ-like
expressions for the resulting fusion rules for all p larger than 2.
