A paper titled ‘Seizing the Initiative: Zinfonia and the Digitization of Classical Music Publishing,’ written by Mark Carroll & James Koehne which chronicles the creation and some of the philosophies behind the Zinfonia system has been published in the prestigious journal Music Reference Services Quarterly published by Routledge.
More information about this can be found here:
http://www.tandfonline.com/doi/full/10.1080/10588167.2013.784553#.UeTcuY2sgls