@article{01142956,
title = {Existence of eigenvalues for (uaa) Markov maps.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {54},
year = {1997},
pages = {421-429},
zbl = {0903.58025},
language = {en},
url = {http://dml.mathdoc.fr/item/01142956}
}
Ferreira, F.F.; Pinto, A.A. Existence of eigenvalues for (uaa) Markov maps.. Portugaliae Mathematica. Nova Série, Tome 54 (1997) pp. 421-429. http://gdmltest.u-ga.fr/item/01142956/