@article{10_4153_CJM_1994_055_9,
     author = {Jain, S. K. and L\'opez-Permouth, S. R. and Oshiro, K. and Saleh, M. A.},
     title = {Weakly {Projective} and {Weakly} {Injective} {Modules}},
     journal = {Canadian journal of mathematics},
     pages = {971--981},
     year = {1994},
     volume = {46},
     number = {5},
     doi = {10.4153/CJM-1994-055-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1994-055-9/}
}