@article{CRMATH_2016__354_8_762_0,
     author = {Gournay, Antoine},
     title = {Harmonic functions with finite \protect\emph{p}-energy on lamplighter graphs are constant},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {762--765},
     publisher = {Elsevier},
     volume = {354},
     number = {8},
     year = {2016},
     doi = {10.1016/j.crma.2016.04.015},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2016.04.015/}
}