@article{PNA_2009_2009_1_a2,
     author = {P\'erez-Tyteca, Patricia and  Castro, Enrique and  Segovia, Isidoro and  Castro, Encarnaci\'on and  Fern\'andez, Francisco and  Cano, Francisco},
     title = {El {Papel} de la {Ansiedad} {Matem\'atica} en el {Paso} de la {Educaci\'on} {Secundaria} a la {Educaci\'on} {Universitaria.}},
     journal = {PNA},
     pages = {23-35},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2009},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/PNA_2009_2009_1_a2/}
}