@article{3318,
author = {Almeida, Jorge and Azevedo, A.},
title = {On regular implicit operations},
journal = {Portugaliae mathematica},
volume = {50},
year = {1993},
pages = {35-61},
zbl = {0802.20049},
mrnumber = {1300585},
language = {en},
url = {http://dml.mathdoc.fr/item/3318}
}
Almeida, Jorge; Azevedo, A. On regular implicit operations. Portugaliae mathematica, Tome 50 (1993) pp. 35-61. http://gdmltest.u-ga.fr/item/3318/