@article{AIHPA_1990__53_4_467_0,
     author = {Aurell, Erik},
     title = {Finding eigenvalues of the period-doubling operator from the characteristic equation},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {467--477},
     publisher = {Gauthier-Villars},
     volume = {53},
     number = {4},
     year = {1990},
     mrnumber = {1096104},
     zbl = {0727.58036},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1990__53_4_467_0/}
}