@article{EXMATH_1987_1987_1_a24,
     author = {Vera L\'opez, Antonio and Larrea, M.{\textordfeminine} Concepci\'on},
     title = {Sobre el n\'umero de clases de conjugaci\'on de pi-elementos en un grupo finito},
     journal = {Extracta mathematicae},
     pages = {81-83},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1987_1987_1_a24/}
}