Introduzione alla System Dynamics

This Technical Report, written in Italian, represents a short introduction to some basic concepts of System Dynamics. The focus is mainly on Causal Loop diagrams and on Flow diagrams and many examples are given of construction of such diagrams. It also contains a discussion of how differential equation of order higher than the first order can be represented and numerically solved by using Vensim models.
Reports of errors and inaccuracies of any kind are appreciated and really welcome.