@article{1077380573,
author = {Buckhiester, Philip G.},
title = {The number of $n\times n$ matrices of rank $r$ and trace $\alpha$ over a finite field},
journal = {Duke Math. J.},
volume = {39},
number = {1},
year = {1972},
pages = { 695-699},
language = {en},
url = {http://dml.mathdoc.fr/item/1077380573}
}
Buckhiester, Philip G. The number of $n\times n$ matrices of rank $r$ and trace $\alpha$ over a finite field. Duke Math. J., Tome 39 (1972) no. 1, pp. 695-699. http://gdmltest.u-ga.fr/item/1077380573/