@article{CRMATH_2003__337_8_505_0,
     author = {Jabin, Pierre-Emmanuel and Vega, Luis},
     title = {Averaging lemmas and the {X-ray} transform},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {505--510},
     publisher = {Elsevier},
     volume = {337},
     number = {8},
     year = {2003},
     doi = {10.1016/j.crma.2003.09.004},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2003.09.004/}
}