Edge-preserving tomographic reconstruction with nonlocal regularization. Yu, D. F. & Fessler, J. A. IEEE Trans. Med. Imag., 21(2):159–73, February, 2002.
doi  bibtex   
@ARTICLE{yu:02:ept,
 author = {D. F. Yu and J. A. Fessler},
 title = {Edge-preserving tomographic reconstruction with nonlocal regularization},
 journal = {{IEEE Trans. Med. Imag.}},
 volume = 21,
 number = 2,
 pages = {{159--73}},
 month = feb,
 pm = 11929103,
 doi = {10.1109/42.993134},
 year = 2002
}

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