For its 21th edition, the international conference on Science and Technology Indicators (STI) in Valencia Spain, in September 2016, proposed a special session moderated by Rigas Arvanitis dealing with internationalization of sciences.

A synthesis of our results regarding the expansion of the world network of collaborations between cities and more especially the role played by national boundaries in the evolution of this network has been presented by Marion Maisonobe (slides bellow).

The proceedings of this conference are available through the following link: