@article{EXMATH_1993_1993_1_a25,
     author = {Cucker, F. and Monta\~na, J. L. and Pardo, L. M.},
     title = {Jerarqu{\'\i}a temporal no determinista sobre los n\'umeros reales.},
     journal = {Extracta mathematicae},
     pages = {87-91},
     publisher = {mathdoc},
     volume = {8},
     number = {2-3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1993_1993_1_a25/}
}