@article{1102699560,
author = {Astala, K. and Ramanujan, M. S.},
title = {$(s)$-nuclear sets and operators.},
journal = {Pacific J. Math.},
volume = {130},
number = {2},
year = {1987},
pages = { 233-246},
language = {en},
url = {http://dml.mathdoc.fr/item/1102699560}
}
Astala, K.; Ramanujan, M. S. $(s)$-nuclear sets and operators.. Pacific J. Math., Tome 130 (1987) no. 2, pp. 233-246. http://gdmltest.u-ga.fr/item/1102699560/