@incollection{ann2005silos,
  address = {Leiden/Boston},
  author = {Boylan, Ann},
  booktitle = {Church, State, Vellum and Stone. Essays on Medieval Spain in Honor of John Williams},
  editor = {Martin, Therese and Harris, Julie A.},
  interhash = {14c8fc56722dd6e8e247523cb479a942},
  intrahash = {b0e1514be7a7c2fc9b667ca79e64b383},
  pages = {173-205},
  series = {The Medieval and Early Modern Iberian World 26},
  title = {The Silos Beatus and the Silos Scriptorium},
  year = 2005
}

@incollection{ángela2005observations,
  address = {Leiden, Boston},
  author = {Franco, Ángela},
  booktitle = {Church, State, Vellum and Stone. Essays on Medieval Spain in Honor of John Williams},
  editor = {Martin, Therese and Harris, Julie A.},
  interhash = {dc6068025256e24b23f4028a4b81b664},
  intrahash = {df573a694584664ced951ed30dfa1390},
  pages = {207-233},
  series = {The Medieval and Early Modern Iberian World 26},
  title = {Observations on the Illustrations of the Silos Beatus Manuscript},
  year = 2005
}