@article{RSMUP_1981__64__141_0,
     author = {Lasota, A. and Yorke, James A.},
     title = {The law of exponential decay for expanding mappings},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {141--157},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {64},
     year = {1981},
     mrnumber = {636632},
     zbl = {0497.28016},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1981__64__141_0/}
}