@article{CLTM_1989_1989_1_a5,
     author = {Pi\~neiro, C\'andido},
     title = {Productos tensoriales de aplicaciones casi r-sumables.},
     journal = {Collectanea mathematica},
     pages = {67-73},
     year = {1989},
     volume = {40},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1989_1989_1_a5/}
}