@article {wong2015homotopic,
	title = {Homotopic non-local regularized reconstruction from sparse positron emission tomography measurements},
	journal = {BMC medical imaging},
	volume = {15},
	number = {1},
	year = {2015},
	pages = {1{\textendash}11},
	publisher = {BioMed Central},
	author = {Wong, Alexander and Liu, Chenyi and Wang, Xiao Yu and Fieguth, Paul and Bie, Hongxia}
}
