@article{01026384,
title = {On the main invariant of an element over a local field.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {54},
year = {1997},
pages = {73-83},
zbl = {0894.11045},
language = {en},
url = {http://dml.mathdoc.fr/item/01026384}
}
Popescu, N.; Zaharescu, A. On the main invariant of an element over a local field.. Portugaliae Mathematica. Nova Série, Tome 54 (1997) pp. 73-83. http://gdmltest.u-ga.fr/item/01026384/