@article{CRMATH_2006__343_8_561_0,
     author = {Lenoir, Marc},
     title = {Influence coefficients for variational integral equations},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {561--564},
     publisher = {Elsevier},
     volume = {343},
     number = {8},
     year = {2006},
     doi = {10.1016/j.crma.2006.09.020},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2006.09.020/}
}