@article{CRMATH_2005__340_8_563_0,
     author = {El Kadiri, Mohamed},
     title = {Th\'eor\`eme de {Liouville} et propri\'et\'e de la moyenne biharmonique restreinte},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {563--566},
     publisher = {Elsevier},
     volume = {340},
     number = {8},
     year = {2005},
     doi = {10.1016/j.crma.2005.03.001},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2005.03.001/}
}