@article{CLTM_1990_1990_1_a16,
     author = {D{\'\i}az, J. C. and L\'opez Molina, J. A. and Rivera, M. J.},
     title = {La propiedad de aproximaci\'on de orden (p,q) en espacios de {Banach.}},
     journal = {Collectanea mathematica},
     pages = {217-232},
     publisher = {mathdoc},
     volume = {41},
     number = {3},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1990_1990_1_a16/}
}