@article {tristan2009estimation,
	title = {Estimation of fiber orientation probability density functions in high angular resolution diffusion imaging},
	journal = {NeuroImage},
	volume = {47},
	number = {2},
	year = {2009},
	pages = {638{\textendash}650},
	publisher = {Elsevier},
	author = {Antonio Trist{\'a}n-Vega and Carl-Fredik Westin and Santiago Aja-Fern{\'a}ndez}
}
