1. Il caso Majorana. Epistolario, documenti, testimonianze (Oscar Mondadori, Milan, 1991, second edition); (Di Renzo, Rome, 2002, fourth revised and enlarged edition).
2. Fermi e la fisica moderna (La città del Sole, Naples, 2004), p. 47;
3. THE INFANCY AND YOUTH OF NEUTRINO PHYSICS : SOME RECOLLECTIONS
4. Ettore Majorana’s Course on Theoretical Physics: A Recent Discovery