@article{MAN_1975__218_162793,
     author = {D.R. Lewis},
     title = {A {Relation} between {Diagonal} and {Unconditional} {Basis} {Constants.}},
     journal = {Mathematische Annalen},
     pages = {193--198},
     publisher = {mathdoc},
     volume = {218},
     year = {1975},
     zbl = {0296.46017},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__218_162793/}
}