@article{NUMA_1989__56_2-3_133403,
     author = {Alfred K. Louis and Andreas Rieder},
     title = {Incomplete {Data} problems in {X-Ray} {Computerized} {Tomography.} {II.} {Truncated} {Projections} and {Region-of-Interest} {Tomography.}},
     journal = {Numerische Mathematik},
     pages = {371--384},
     publisher = {mathdoc},
     volume = {56},
     number = {2-3},
     year = {1989},
     zbl = {0675.65137},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1989__56_2-3_133403/}
}