@article {aja2009noise,
	title = {Noise estimation in single-and multiple-coil magnetic resonance data based on statistical models},
	journal = {Magnetic resonance imaging},
	volume = {27},
	number = {10},
	year = {2009},
	pages = {1397{\textendash}1409},
	publisher = {Elsevier},
	author = {Santiago Aja-Fern{\'a}ndez and Antonio Trist{\'a}n-Vega and Carlos Alberola-Lopez}
}
