BIBCYT http://bibcyt.ucla.edu.ve/cgi-win/be_alex.exe?Ultimo&Nombrebd=BIBCYT UCLA - Biblioteca de Ciencias y Tecnologia Felix Morales Bueno Bar-Lev, Shaul K. P Principal Landsman, Zinoviy P Principal Exponential dispersion models: Second-order minimax estimation of the mean for unknown dispersion parameter p3837-3851, 15p Kagan, Abram P Principal Rao, C. Radhakrishna P Principal Landsman, Zinoviy P Principal Sub- and superadditivity a la Carlen of matrices related to the Fisher information p291-298, 8p