@article{CMH_1982__57_139899,
     author = {Li Banghe},
     title = {On classification of immersions of n-manifolds in (2n-1)-manifolds.},
     journal = {Commentarii mathematici Helvetici},
     pages = {135--144},
     publisher = {mathdoc},
     volume = {57},
     year = {1982},
     zbl = {0495.57011},
     url = {http://geodesic.mathdoc.fr/item/CMH_1982__57_139899/}
}