On centralizers of involutions having a component of type ${A}_{6}$ and ${A}_{7}$
Rendiconti del Seminario Matematico della Università di Padova, Volume 54  (1975), p. 1-29
@article{RSMUP_1975__54__1_0,
author = {Fritz, Franz J.},
title = {On centralizers of involutions having a component of type $A\_6$ and $A\_7$},
journal = {Rendiconti del Seminario Matematico della Universit\a di Padova},
publisher = {Seminario Matematico of the University of Padua},
volume = {54},
year = {1975},
pages = {1-29},
zbl = {0358.20027},
mrnumber = {435205},
language = {en},
url = {http://www.numdam.org/item/RSMUP_1975__54__1_0}
}

Fritz, Franz J. On centralizers of involutions having a component of type $A_6$ and $A_7$. Rendiconti del Seminario Matematico della Università di Padova, Volume 54 (1975) , pp. 1-29. http://www.numdam.org/item/RSMUP_1975__54__1_0/`

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