@article{10_4064_sm_43_1_1_25,
     author = {J. Morrell and J. Retherford},
     title = {p-trivial {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {1--25},
     year = {1972},
     volume = {43},
     number = {1},
     doi = {10.4064/sm-43-1-1-25},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-43-1-1-25/}
}