@article {27394,
	title = {Systematic pathway to PT -symmetry breaking in scattering systems},
	journal = {PHYSICAL REVIEW A},
	volume = {90},
	year = {2014},
	month = {2014},
	isbn = {1050-29471094-1622},
	author = {Kalozoumis, P. A. and G Pappas and Diakonos, F. K. and Schmelcher, P.}
}
