@article{CM_1991__79_3_295_0,
     author = {Raynaud, Yves},
     title = {Some remarks on ultrapowers and superproperties of the sum and interpolation spaces of {Banach} spaces},
     journal = {Compositio Mathematica},
     pages = {295--319},
     publisher = {Kluwer Academic Publishers},
     volume = {79},
     number = {3},
     year = {1991},
     mrnumber = {1121141},
     zbl = {0788.46024},
     language = {en},
     url = {http://www.numdam.org/item/CM_1991__79_3_295_0/}
}