@article{RIUMI_2010_1_3_1_a1,
     author = {Aragona, Riccardo},
     title = {Semi-invarianti di quiver simmetrici},
     journal = {La Matematica nella societ\`a e nella cultura},
     pages = {11--14},
     publisher = {mathdoc},
     volume = {Ser. 1, 3},
     number = {1},
     year = {2010},
     zbl = {0993.16011},
     mrnumber = {1758750},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/RIUMI_2010_1_3_1_a1/}
}