  This volume contains a selection of the papers presented at the Ninth
International Workshop on Developments in Computational Models (DCM 2013) held
in Buenos Aires, Argentina on 26th August 2013, as a satellite event of CONCUR
2013. Several new models of computation have emerged in the last years, and
many developments of traditional computational models have been proposed with
the aim of taking into account the new demands of computer systems users and
the new capabilities of computation engines. A new computational model, or a
new feature in a traditional one, usually is reflected in a new family of
programming languages, and new paradigms of software development. The aim of
this workshop is to bring together researchers who are currently developing new
computational models or new features for traditional computational models, in
order to foster their interaction, to provide a forum for presenting new ideas
and work in progress, and to enable newcomers to learn about current activities
in this area.
