sentences:  Finnur's principal area of study was Old Norse poetry.His three most important works are "Den norsk-islandske skjaldedigtning", an edition of the entire corpus of skaldic poetry in two parts - one which gives the text of the manuscripts with variants and one which gives a normalized text and a Danish translation.Another of Finnur's major works is "Lexicon Poeticum", a dictionary of Old Norse poetry, ostensibly an update of a work with the same name by Sveinbjörn Egilsson but in effect an original work.