@article{MT_2008_11_2_a2,
     author = {V. P. Golubyatnikov},
     title = {On convexity of a~planar domain with a~pair of concave tomography projections},
     journal = {Matemati\v{c}eskie trudy},
     pages = {107--114},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2008_11_2_a2/}
}