@article{01482095,
title = {A weak law of large numbers for the sample covariance matrix.},
journal = {Electronic Communications in Probability [electronic only]},
volume = {5},
year = {2000},
pages = {73-76},
zbl = {0954.60012},
language = {en},
url = {http://dml.mathdoc.fr/item/01482095}
}
Sepanski, Steven J.; Pan, Zhidong. A weak law of large numbers for the sample covariance matrix.. Electronic Communications in Probability [electronic only], Tome 5 (2000) pp. 73-76. http://gdmltest.u-ga.fr/item/01482095/