Haggh: Sources ... Ghent and London (1996)

B. Haggh: Sources for plainchant and ritual from Ghent and London: a survey and comparison, in: Handelingen der Maatschappij voor Geschiedenis en Oudheidkunde te Gent. Nieuwe reeks, deel 1 (1996), pp. 23-72.

This article, mainly dealing with the Gent liturgical sources, supersedes an earlier version, published in: Cantus Planus. Papers Read at the 7th Meeting, Sopron, Hungary, 1995 (Budapest 1998), pp. 241-271.