Romanticism and the teaching of Johann Simon Mayr, Shaftesbury: Element Books, Ltd (UK); Rockport, MA: Element, Inc.(USA) Ashbrook, William (1982), Donizetti and His Operas, Cambridge University Press. Ashbrook, William (1998), "Poliuto" in Stanley Sadie (ed.), The New Grove Dictionary of Opera, Vol. Three. London: MacMillan Publishers, Inc. Ashbrook, William and Sarah Hibberd (2001), in Holden, Amanda (Ed.), The New Penguin Opera Guide, New York: Penguin Putnam. . pp. 224 – 247. Black, John (1982), Donizetti’s Operas in Naples, 1822—1848. London: The Donizetti Society. Black, John (1984), The Italian Romantic Libretto: A Study of Salvadore Cammarano, Edinburgh: The University Press. Osborne, Charles, (1994), The Bel Canto Operas of Rossini, Donizetti, and Bellini, Portland, Oregon: Amadeus Press. Parker, Roger; William Ashbrook (1994), "Poliuto: the Critical Edition of an 'International Opera'", in booklet accompanying the 1994 recording on Ricordi. Parouty, Michel (tran. Hugh Graham) (1997), "Donizetti and Poliuto" in booklet accompanying the 1960 EMI recording Steane, John (1997), "Callas and Poliuto", in booklet accompanying the 1960 EMI recording Weinstock, Herbert (1963), Donizetti and the World of Opera in Italy, Paris, and Vienna in the First Half of the Nineteenth Century, New York: Pantheon Books. Other sources Allitt, John Stewart (1975), "Les martyrs Revived", Journal No. 2, The Donizetti Society (London) (Journal No. 2 also contains much information about the opera's original 1840 production) Ashbrook, William and Roger Parker (1994), "Poliuto: the Critical Edition of an 'International' Opera", in booklet accompanying the Gavazenni / Ricordi recording. Cassaro, James. P. (2009), Gaetano Donizetti: a Research and Information Guide. New York: Routledge. Giradi, Michele, "Donizetti e il grand-opéra: il caso di Les Martyrs" on www-5.unipv.it Harewood, Earl of, and Antony Peattie (eds.), The New Kobbe's Opera Book, London: Ebury Press, 1997. Loewenberg, Alfred (1970). Annals of Opera, 1597-1940, 2nd edition. Rowman and Littlefield Sadie, Stanley, (Ed.); John Tyrell (Exec. Ed.) (2004), The New Grove Dictionary of Music and Musicians. 2nd edition. London: Macmillan. (hardcover). (eBook). Tommasini, Anthony, "Filling Out the Callas Legacy (in Spite of Callas)", The New York Times, February 1, 1998. Accessed 23 December 2008. External links Donizetti Society (London) website. Source for further research. Poliuto: Italian libretto on "Libretto Index by H. Weber", 8 February 2014 Les martyrs: French libretto on "Libretto Index by H. Weber", 8 February 2014 Operas by Gaetano Donizetti Italian-language operas Operas 1838 operas 1848 operas Operas based on works by Pierre Corneille