Lundberg, M. 2012. Pehr Frigel’s Om Contrapunkten (c. 1815): The Earliest Extant Counterpoint Method in the Swedish Vernacular, Edited and Translated with Historico-Critical Commentary. Svensk tidskrift för musikforskning / Swedish Journal of Music Research. 15, (dec. 2012). DOI:https://doi.org/10.58698/stm-sjm.v15.48514.