@article{10_4064_sm_33_3_299_304,
     author = {Richard Crownover},
     title = {Principal ideals which are maximal ideals in {Banach} algebras},
     journal = {Studia Mathematica},
     pages = {299--304},
     publisher = {mathdoc},
     volume = {33},
     number = {3},
     year = {1969},
     doi = {10.4064/sm-33-3-299-304},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-33-3-299-304/}
}