Authors: Juan-Enrique Martínez-Legaz and José Vicente-Pérez
Journal of Mathematical Analysis and Applications, Vol. 376, No 2, 602--612, January, 2011Authors: Juan-Enrique Martínez-Legaz and José Vicente-Pérez
Journal of Mathematical Analysis and Applications, Vol. 376, No 2, 602--612, January, 2011© Barcelona Graduate School of Economics. All rights reserved.