@article {Electronic_Letters_2004,
	title = {Approximate closed-form expression for the ergodic capacity of polarisation-diversity {MIMO} systems},
	journal = {Electronic Letters},
	volume = {40},
	number = {19},
	year = {2004},
	month = {September},
	pages = {1192{\textendash}1194},
	author = {P{\'e}rez, Jes{\'u}s and Ib{\'a}{\~n}ez, Jes{\'u}s and Vielva, Luis and Santamar{\'\i}a, Ignacio}
}
