https://www.newliturgicalmovement.org/2009/03/use-history-and-development-of-planeta.html
New Liturgical Movement: Use, History and Development of the "Planeta Plicata" or Folded Chasuble
Sacred liturgy and liturgical arts. Liturgical history and theology. The movements for the Usus Antiquior and Reform of the Reform.
new liturgical movementhistory and developmentfolded chasubleuseplaneta