BibTex format
@article{Liebeck:2015:10.1016/j.jalgebra.2014.08.037,
author = {Liebeck, MW},
doi = {10.1016/j.jalgebra.2014.08.037},
journal = {JOURNAL OF ALGEBRA},
pages = {431--437},
title = {On products of involutions in finite groups of Lie type in even characteristic},
url = {http://dx.doi.org/10.1016/j.jalgebra.2014.08.037},
volume = {421},
year = {2015}
}