@article{PM_1997_1997_1_a32,
     author = {Demetropoulou-Psomopoulou, Demetra},
     title = {Estructuras {G} de segundo orden definidas por operadores lineales que satisfacen relaciones algebraicas.},
     journal = {Publicacions matem\`atiques},
     pages = {437-453},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1997_1997_1_a32/}
}