@article{PORMA_1979__38_3-4_115408,
     author = {Bacon, Philip},
     title = {Axioms for {Bockstein} homomorphisms},
     journal = {Portugaliae mathematica},
     pages = {255--264},
     publisher = {mathdoc},
     volume = {38},
     number = {3-4},
     year = {1979},
     mrnumber = {0745251},
     zbl = {0545.55018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1979__38_3-4_115408/}
}