@article{hal-01512963,
author = {Kyritsis, Konstantinos, },
title = {Free algebrae and alternative definitions of the Hessenberg operations in the ordinal numbers},
journal = {HAL},
volume = {1992},
number = {0},
year = {1992},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-01512963}
}
Kyritsis, Konstantinos, . Free algebrae and alternative definitions of the Hessenberg operations in the ordinal numbers. HAL, Tome 1992 (1992) no. 0, . http://gdmltest.u-ga.fr/item/hal-01512963/