@article{PORMA_1960__19_4_114842,
     author = {Hu, Sze-Tsen},
     title = {On axiomatic approach to homology theory without using the relative groups},
     journal = {Portugaliae mathematica},
     pages = {211--225},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1960},
     mrnumber = {0130689},
     zbl = {0109.15703},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1960__19_4_114842/}
}