@article{GDZPPN001261568,
title = {The local semilattice of chains of idempotents.},
journal = {Semigroup forum},
volume = {44},
year = {1992},
pages = {157-163},
zbl = {0752.06002},
url = {http://dml.mathdoc.fr/item/GDZPPN001261568}
}
Putcha, M.S.; Easdown, D. The local semilattice of chains of idempotents.. Semigroup forum, Tome 44 (1992) pp. 157-163. http://gdmltest.u-ga.fr/item/GDZPPN001261568/