@article{FORUM_1996__8_3_141760,
     author = {Massimo Campanino and Stefano Isola},
     title = {Infinite invariant measures for non-uniformely expanding transformations of [0, 1]: weak law of large numbers with anamalous scaling.},
     journal = {Forum mathematicum},
     pages = {71--92},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1996},
     zbl = {0837.60022},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1996__8_3_141760/}
}