@article{05346597,
title = {Estimation of a quadratic functional of a density.},
journal = {Divulgaciones Matem\'aticas},
volume = {15},
year = {2007},
pages = {227-233},
zbl = {1144.62313},
language = {en},
url = {http://dml.mathdoc.fr/item/05346597}
}
Olivares, María M.; Medina, Natacha; Martínez, Harú V. Estimation of a quadratic functional of a density.. Divulgaciones Matemáticas, Tome 15 (2007) pp. 227-233. http://gdmltest.u-ga.fr/item/05346597/