6". Social Security in Europe: The case of Spain", in E, Baldacci and F. Peracchi (eds); Reforming the Social Security System.‑ An International Perspective (others authors; A. Böesch‑Supan, P. Pesticau, M. Persson y R. Disney), ISTAT (National Institute of Statistics ‑Italy), Rome, pp.159‑176 (2000).
6. “Social Security in Europe: The case of Spain", in E. Baldacci and F. Peracchi (eds.), in: Reforming the Social Security System ‑ An International Perspective (andere auteurs: A. Böesch‑Supan, P. Pesticau, M. Persson en R. Disney), (Rome: ISTAT (Italiaans nationaal bureau voor de statistiek) 2000), p. 159‑176.