@article{BASM_2006_3_a9,
     author = {A. I. Kashu},
     title = {Natural classes and torsion free classes in categories of modules},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {101--108},
     publisher = {mathdoc},
     number = {3},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2006_3_a9/}
}