@article{NUMA_1986__48_133068,
     author = {Alfred K. Louis},
     title = {Incomplete {Data} {Problems} in {X-Ray} {Computerized} {Tomography.} {I.} {Singular} {Value} {Decomposition} of the {Limited} {Angle} {Transform.}},
     journal = {Numerische Mathematik},
     pages = {251--262},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0578.65131},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133068/}
}