@article{10_4153_CMB_1994_020_5,
     author = {Zhengping, Zhou},
     title = {A {Lattice} {Isomorphism} {Theorem} for {Nonsingular} {Retractable} {Modules}},
     journal = {Canadian mathematical bulletin},
     pages = {140--144},
     year = {1994},
     volume = {37},
     number = {1},
     doi = {10.4153/CMB-1994-020-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-020-5/}
}