@article{01604420,
title = {Geometric properties of normed spaces and estimates for rectangular modulus.},
journal = {Mathematica Pannonica},
volume = {12},
year = {2001},
pages = {27-38},
zbl = {1003.46006},
language = {en},
url = {http://dml.mathdoc.fr/item/01604420}
}
Şerb, Ioan. Geometric properties of normed spaces and estimates for rectangular modulus.. Mathematica Pannonica, Tome 12 (2001) pp. 27-38. http://gdmltest.u-ga.fr/item/01604420/