@article{2395,
author = {Davis, H.S. and Stadtlander, D.P. and Swingle, P.M.},
title = {Properties of the set functions $T^n$
},
journal = {Portugaliae mathematica},
volume = {21},
year = {1962},
pages = {113-133},
zbl = {0107.40101},
mrnumber = {0142108},
language = {en},
url = {http://dml.mathdoc.fr/item/2395}
}
Davis, H.S.; Stadtlander, D.P.; Swingle, P.M. Properties of the set functions $T^n$
. Portugaliae mathematica, Tome 21 (1962) pp. 113-133. http://gdmltest.u-ga.fr/item/2395/