@article{01780511,
title = {Douglas algebras without maximal subalgebra and without minimal superalgebra.},
journal = {Abstract and Applied Analysis},
volume = {6},
year = {2001},
pages = {1-11},
doi = {10.1155/S1085337501000458},
zbl = {1029.46071},
language = {en},
url = {http://dml.mathdoc.fr/item/01780511}
}
Guillory, Carroll. Douglas algebras without maximal subalgebra and without minimal superalgebra.. Abstract and Applied Analysis, Tome 6 (2001) pp. 1-11. doi : 10.1155/S1085337501000458. http://gdmltest.u-ga.fr/item/01780511/