@article {letzepis2008outageppm,
	title = {Outage probability of the Gaussian MIMO free space optical channel with PPM},
	journal = {IEEE Transactions on Communications},
	year = {2009},
	pages = {2649{\textendash}2653},
	publisher = {IEEE Communications Society},
	issn = {0090-6778},
	doi = {10.1109/ISIT.2008.4595472},
	url = {http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=26},
	author = {Nick Letzepis and Guill{\'e}n i F{\`a}bregas, Albert}
}
