@article{Białynicki-Birula:2009,
author
=
"I.Białynicki-Birula and V.Cao Long",
title
=
"New algorithm for numerical calculations of energies of N-level systems interacting with quantized electromagnetic field",
journal
=
"Bulletin de l'Académie Polonaise des Sciences : Série des Sciences Mathématiques, Astronomiques et Physiques",
volume
=
"Vol. 26",
number
=
"no 12",
pages
=
"1051--1054",
year
=
"1978",
}