Geodesic
Quasimanifolds of lattices
Matematičeskie zametki, Tome 16 (1974) no. 1, pp. 49-56 
V. I. Igoshin. Quasimanifolds of lattices. Matematičeskie zametki, Tome 16 (1974) no. 1, pp. 49-56. http://geodesic.mathdoc.fr/item/MZM_1974_16_1_a5/
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     author = {V. I. Igoshin},
     title = {Quasimanifolds of lattices},
     journal = {Matemati\v{c}eskie zametki},
     pages = {49--56},
     year = {1974},
     volume = {16},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_1_a5/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We note some properties of the lattice of all quasimanifolds of lattices, and we determine a denumerable subsemilattice of this lattice consisting of quasimanifolds which are not manifolds.