These are some of the many collaborators worldwide with whom we collaborate

• Luciano M. Abreu (Universidade da Bahia)

• Bireswar Basu-­‐Mallick (Saha Institute of Nuclear Physics, Kolkata, India)
  
  
• Stanley J. Brodsky (Stanford Linear Accelerator Center)

• Fabien Buisseret, Gwendolyn Lacroix (Université de Mons)
  
  
• Daniel Cabrera (Gohete Universität, Frankfurt)

• Francesco Calogero, Paolo Santini (Università di Roma "La Sapienza")
  
  
• Alberto Enciso (CSIC-ICMAT)

• Yuri Fedorov (Universitat Politécnica de Catalunya)

• Giuseppe Gaeta (Dipartimento di Matematica, Universita' di Milano)

• Elena. T. Herruzo (Instituto de Microelectrónica de Madrid, CSIC)

• Satoru Hirenzaki (Nara Women's University)

• Andrew Hone (University of Kent at Canterbury)

• Daisuke Jido (Kyoto University)

• Niky Kamran (McGill University)

• Boris Konopelchenko (U. Lecce)

• Decio Levi (Università di Roma III)

• Sara Lombardo (Vrije Universiteit Amsterdam)

• Elena Medina (Depto. Matemática Aplicada, U. Cádiz)

• Robert Milson (Dalhousie University)
  
  
• Giorgio Parisi (Univ. Roma, la Sapienza)

• Ralf Rapp (Cyclotron Institute and Department of Physics, Texas A&M University)

• R. Rivers, T. Evans (Imperial College)

• Luis Roca (Universidad de Murcia)

• Enrique Ruiz-Arriola y Juan Nieves (Depto Física Moderna, U. Granada)
  
  
• Juan José Ruiz Lorenzo (Univ. de Extremadura)

• Matteo Sommacal (Università di Perugia)

• D. Steer (Université de Paris-Sud, Orsay)
  
  
• Juan M. Torres Rincón (Univ. de Nueva York, Stony Brook)

• Pavel Winternitz (Cente de Recherches Mathématiques, Montréal)

• Junko Yamagata-Sekihara (Universidad de Valencia - CSIC)