@article{2713,
author = {Rosenfeld, Azriel},
title = {Chain semigroups},
journal = {Portugaliae mathematica},
volume = {32},
year = {1973},
pages = {155-156},
zbl = {0259.20058},
mrnumber = {0316607},
language = {en},
url = {http://dml.mathdoc.fr/item/2713}
}
Rosenfeld, Azriel. Chain semigroups. Portugaliae mathematica, Tome 32 (1973) pp. 155-156. http://gdmltest.u-ga.fr/item/2713/