  Intermediate mass fragment emission for reactions of $^{32}\text{S}
+\,^{51}\text{V},\,^{109}$Ag, and $^{238}\text{U}$ has been studied. Double
differential cross sections were analysed in terms of the generalised moving
source model yielding charge distributions. Isotope ratios show strong fragment
mass dependencies. The data were successfully reproduced by the coalescence
model as well as by statistical multifragmentation model calculations. Quantum
molecular dynamics model calculations were not so successful.
