@article{CRMATH_2008__346_1-2_1_0,
     author = {Amine El Sahili and Mekkia Kouider},
     title = {Claws in digraphs},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {1--4},
     publisher = {Elsevier},
     volume = {346},
     number = {1-2},
     year = {2008},
     doi = {10.1016/j.crma.2007.10.040},
     language = {en},
}