Geldhof, Joris, and Olga Gasselblat. 2026. “Aemiliana Löhr and Herstelle Abbey’s Jahresbriefe: A Remarkable Contribution to the Liturgical Movement”. Ex Fonte – Journal of Ecumenical Studies in Liturgy 5 (October):611-47. https://doi.org/10.25365/exf-2026-5-22.