Alvaro De Rujula
Álvaro de Rújula y Alguer, XII marqués de Ciadoncha (Madrid, 29 de enero de 1944) es un físico teórico y profesor español.
Between February 1969 and September 1971, he carried out his first collaboration with CERN as a visiting scientist. Between 1977 and 2009, he was a member of the staff, and from 1996 to 1999 he served as director of its Theory Division.