@article{JLT_2007_17_2_JLT_2007_17_2_a4,
     author = {S. Helgason },
     title = {The {Inversion} of the {X-ray} {Transform} on a {Compact} {Symmetric} {Space}},
     journal = {Journal of Lie theory},
     pages = {307--315},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/JLT_2007_17_2_JLT_2007_17_2_a4/}
}