J. A. Rubino-Martin and R. Rebolo and M. Tucci and R. Genova-Santos and S. R. Hildebrandt and R. Hoyland and J. M. Herreros and F. Gomez-Renasco and C. Lopez Caraballo and E. Martinez-Gonzalez and P. Vielva and D. Herranz and F. J. Casas and E. Artal and B. Aja and L. de la Fuente and J. L. Cano and E. Villa and A. Mediavilla and J. P. Pascual and L. Piccirillo and B. Maffei and G. Pisano and R. A. Watson and R. Davis and R. Davies and R. Battye and R. Saunders and K. Grainge and P. Scott and M. Hobson and A. Lasenby and G. Murga and C. Gomez and A. Gomez and J. Arino and R. Sanquirce and J. Pan and A. Vizcarguenaga and B. Etxeita (2008)

José Luis González Sánchez and M. Mediavilla Pascual and J. C. Fraile Marinero and Fernando Gayubo Rojo and J. Pérez Turiel and F. J. García González ICRA 96-101 (2002)