@article{RCP25_1984__34__91_0,
     author = {Sibuya, Yasutaka},
     title = {On the {Functional} {Equation} $f(\lambda )+f(\omega \lambda )f(\omega ^{-1}\lambda )=1$, $(\omega ^5=1)$},
     journal = {Les rencontres physiciens-math\'ematiciens de Strasbourg -RCP25},
     note = {talk:4},
     pages = {91--103},
     publisher = {Institut de Recherche Math\'ematique Avanc\'ee - Universit\'e Louis Pasteur},
     volume = {34},
     year = {1984},
     language = {en},
     url = {http://archive.numdam.org/item/RCP25_1984__34__91_0/}
}