We have been in contact with the following researchers/groups in a number of different ways:
participation in coordinated projects, joint directions, joint publications, research visits…

Cambridge University (United Kingdom) 
Dr. Carlos Molina-Jiménez
Topics: fault-tolerance, business-to-business, and recently big data

Rochester Institute of Technology (United States)
Dr. Carlos Rivero Osuna
Topics: information integration and graphs database

University of Seville (Spain)
The Distributed Group (TDG), lead by Dr. Rafael Corchuelo
Topics: application integration, information extraction

De Montfort University (United Kingdom)
Dr. Iryna Yevseyeva
Topics: multicriteria optimisation and decison making

Leiden University (Netherlands)
Dr. Michael Emmerich
Topics: multicriteria optimisation algorithms

University Institute of Lisbon (Portugal)
Dr. Vitor Manuel Basto Fernandes
Topics: optimisation algorithms and methods, application integration 

Federal University of Rio Grande do Sul (Brazil)
Dr. Leandro Krug Wives, Dr. Marcelo Soares Pimenta, and Dr. Claudio Fernando Resin Geyer
Topics: business processes,  software development, distributed systems

Federal University of Rio de Janeiro (Brazil)
MsC. Fabio P. Basso and MsC. Raquel M. Pillat
Topics: model-driven development and business processes

Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUÍ)
Dr. José Antonio Gonzalez da Silva
Topics: image recognition and classification

i2Factory Company (Spain)
Dr. José Luis Arjona
Topics: application integration platforms in the cloud