@article{PSMIR_1975___2_A5_0,
     author = {Gerstner, Otto},
     title = {Cotorsion {Properties}},
     journal = {Publications de l'Institut de recherche math\'ematiques de Rennes},
     note = {talk:5},
     pages = {1--5},
     publisher = {D\'epartement de Math\'ematiques et Informatique, Universit\'e de Rennes},
     number = {2},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PSMIR_1975___2_A5_0/}
}