@InProceedings{renk2009upper,
	author = {Renk, Tobias and Jondral, Friedrich K},
	title = {Upper and lower bound on signal-to-noise ratio gains for cooperative relay networks},
	booktitle = {Proc. Conf. Inform. Sciences Syst. (CISS)},
	pages = {652–656},
	year = {2009},
}