@article{10_4064_fm_96_3_173_175,
     author = {Michael Bix},
     title = {A geometric filtration of ${N_{\ast}}^{Z_2}$},
     journal = {Fundamenta Mathematicae},
     pages = {173--175},
     publisher = {mathdoc},
     volume = {96},
     number = {3},
     year = {1977},
     doi = {10.4064/fm-96-3-173-175},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-96-3-173-175/}
}