@article{EXMATH_1986_1986_1_a2,
     author = {Nu\~nez, C. Ana},
     title = {Una demostraci\'on elemental de la invariancia y la inversi\'on de pares caracter{\'\i}sticos.},
     journal = {Extracta mathematicae},
     pages = {6-8},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1986_1986_1_a2/}
}