@article{Flach:3,
      author        = "Santo,Alberto Magno and Flach, Martin",
      title         = "{Opus insigne de laudibus, beate Marie virginis, alias
                       Mariale appellatu}",
      year          = "1493",
      note          = "El autor probable es Richardus de Sancto Laurentio (véase
                       CIBN París A-147)",
}