Authors
Gianpiero Bianchi
ISTAT, Italian National Institute of Statistics, Rome, Italy
Renato Bruni
DIAG, Sapienza University of Rome, Via Ariosto 25, Italy
Antonio Laureti Palma
ISTAT, Italian National Institute of Statistics, Rome, Italy
Giulio Perani
ISTAT, Italian National Institute of Statistics, Rome, Italy
Francesco Scalfati
ISTAT, Italian National Institute of Statistics, Rome, Italy