@book { plastok,
	address = "Milano, ",
	author = "Plastok and R. A. and Kalley, G.",
	publisher = "Etas, Collana Schaum.",
	title = "Computer Grafica",
	year = "1987",
	}

@book { haut,
	address = "Milano",
	author = "Haut, H.",
	publisher = "Gruppo Editoriale Jackson",
	title = "Programmi di Matematica e Statistica in Basic. ",
	year = "1982",
	}


@book {sadocchi,
   address = "Milano",
   author = "Sadocchi, S.",
   publisher = "Franco Angeli",
   title = "Manuale di Analisi Statistica Multivariata",
   year = "1981",
   }

@book { Desmadril,
	address = "Paris",
	author = "Desmadril, M.",
	publisher = "Eyrolles",
	title = "Analyse des Donnees en C. ",
	year = "1989",
	}

@book { Bouroche,
	address = "Napoli",
	author = "Bouroche,  J. M. and Saporta, G.",
	publisher = "Eyrolles",
	title = "L'Analisi dei Dati.",
	year = "1983",
	}