@article{EXMATH_1987_1987_1_a23,
     author = {Vera L\'opez, Antonio and Vera L\'opez, Juan},
     title = {Sobre los grupos finitos cuyos subgrupos minimales normales son uni\'on de dos clases de conjugaci\'on exactamente},
     journal = {Extracta mathematicae},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1987_1987_1_a23/}
}