@article{10_4064_sm_37_3_237_243,
     author = {Horacio Porta},
     title = {Factorable and strictly singular operators in a product space},
     journal = {Studia Mathematica},
     pages = {237--243},
     publisher = {mathdoc},
     volume = {37},
     number = {3},
     year = {1970},
     doi = {10.4064/sm-37-3-237-243},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-37-3-237-243/}
}