@misc{10_4153_CJM_1992_029_8,
     title = {The {Real} {Spectrum} of {Higher} {Level} of a {Commutative} {Ring}},
     journal = {Canadian journal of mathematics},
     pages = {449--462},
     year = {1992},
     volume = {44},
     number = {3},
     doi = {10.4153/CJM-1992-029-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-029-8/}
}