@article{Nguyen Van:2009,
author
=
"P.Nguyen Van and H.Dinh Van and V.Cao Long",
title
=
"Optical bistability effect in DFB laser with two sections",
journal
=
"VNU. Journal of Science : Mathematics - Physics",
volume
=
"T. 22",
number
=
"no 2",
pages
=
"47--54",
year
=
"2006",
}