@article{PORMA_1949__8_3_114679,
     author = {Ma, L.},
     title = {On relations between homology and homotopy groups},
     journal = {Portugaliae mathematica},
     pages = {107--135},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1949},
     mrnumber = {0038659},
     zbl = {0038.36503},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1949__8_3_114679/}
}