Geodesic
Flat cyclic modules
Matematičeskie zametki, Tome 8 (1970) no. 2, pp. 245-250 
R. B. Treger. Flat cyclic modules. Matematičeskie zametki, Tome 8 (1970) no. 2, pp. 245-250. http://geodesic.mathdoc.fr/item/MZM_1970_8_2_a12/
@article{MZM_1970_8_2_a12,
     author = {R. B. Treger},
     title = {Flat cyclic modules},
     journal = {Matemati\v{c}eskie zametki},
     pages = {245--250},
     year = {1970},
     volume = {8},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_2_a12/}
}
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IS  - 2
UR  - http://geodesic.mathdoc.fr/item/MZM_1970_8_2_a12/
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ID  - MZM_1970_8_2_a12
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Voir la notice de l'article provenant de la source Math-Net.Ru

Necessary and sufficient conditions are established for cyclic $\Lambda$-modules to be flat, and rings over which any flat cyclic $\Lambda$-module is free are investigated.