@article{CRMATH_2006__342_9_635_0,
     author = {Cioab\u{a}, Sebastian M.},
     title = {Closed walks and eigenvalues of {Abelian} {Cayley} graphs},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {635--638},
     publisher = {Elsevier},
     volume = {342},
     number = {9},
     year = {2006},
     doi = {10.1016/j.crma.2006.03.005},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2006.03.005/}
}