@article{CM_1956-1958__13__173_0,
     author = {Hu, Sze-Tsen},
     title = {Algebraic local invariants of topological spaces},
     journal = {Compositio Mathematica},
     pages = {173--218},
     publisher = {Kraus Reprint},
     volume = {13},
     year = {1956-1958},
     mrnumber = {104223},
     zbl = {0087.38101},
     language = {en},
     url = {http://www.numdam.org/item/CM_1956-1958__13__173_0/}
}