Boogaart, Jaques. 1993. Love's Unstable Balance. Part I: Analogy of Ideas in Text and Music of Machaut's Motet 6. Muziek & Wetenschap, 3-23.

Boogaart, Jaques. 1993. Love's Unstable Balance. Part II: More Balance Problems and the Order of Machaut's Motets. Muziek & Wetenschap, 24-33.