@article{CRMATH_2002__335_8_711_0,
     author = {Choquet-Bruhat, Yvonne and York, James W.},
     title = {Bianchi{\textendash}Euler system for relativistic fluids and {Bel{\textendash}Robinson} type energy},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {711--716},
     publisher = {Elsevier},
     volume = {335},
     number = {8},
     year = {2002},
     doi = {10.1016/S1631-073X(02)02550-5},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(02)02550-5/}
}