@article{MZ_1956__65_169586,
     author = {Alfred L. Foster},
     title = {Ideals and their {Structure} in {Classes} of {Operational} {Algebras.}},
     journal = {Mathematische Zeitschrift},
     pages = {70--75},
     publisher = {mathdoc},
     volume = {65},
     year = {1956},
     zbl = {0070.02801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1956__65_169586/}
}