%0 Journal Article %A JR., Monte B. Boisen %A Sheldon, Philip B. %T CPI-Extensions: Overrings of Integral Domains with Special Prime Spectrums %J Canadian journal of mathematics %D 1977 %P 722-737 %V 29 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-076-6/ %R 10.4153/CJM-1977-076-6 %F 10_4153_CJM_1977_076_6