| William J. Entwistle |
Estudis Universitaris Catalans Vol. XVIII |
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5/2, p. 143 |
| Grace Frank |
The Liturgical Drama in Medieval Spain. Pontifical Institute of Mediæval Studies (Studies and Texts 4), by Richard B. Donovan |
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28/3, p. 194 |
| Lewis Thorpe |
Des Annales Carolingiennes à Doon de Mayence, (Publications romanes et françaises CXXIX), by Paul Aebischer |
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