1. Grupo de Sistemas Complejos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, 28040 Madrid, Spain
2. Instituto de Ciencias Matemáticas (ICMAT), Cantoblanco, 28049 Madrid, Spain
3. Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104,
USA
4. Centre for Nonlinear Mathematics and Applications, Department of Mathematical Sciences, Loughborough University, Loughborough
LE11 3TU, United Kingdom
5. Departamento de Química, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
6. Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA