@article{MZ_1970__114_171308,
     author = {Melapalayam S. Ramanujan},
     title = {Absolutely {...-Summing} {Operators,} ...a {Symmetric} {Sequence} {Space.}},
     journal = {Mathematische Zeitschrift},
     pages = {187--193},
     publisher = {mathdoc},
     volume = {114},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__114_171308/}
}