@incollection{iiasa13686, booktitle = {On the theory of models and the modelling of natural phenomena.}, editor = {G. Bahrenberg and M. Fischer and P. Nijkamp}, month = {September}, title = {On the theory of models and the modelling of natural phenomena.}, publisher = {Gower}, year = {1984}, pages = {73--92}, url = {https://pure.iiasa.ac.at/id/eprint/13686/}, isbn = {978-0566006852}, abstract = {It is argued that a modelling relation in an encoding of a set of physical observables, characterising a natural system N, into an appropriate formal mathematical structure. The theorems of the formal structure are then decoded into true statements about N. Various system-theoretic concepts such as bifurcation, similarity, system analogy, reductionism, and complexity are then seen to be naturally expressed.}, author = {Casti, J.} }