||Snow 1977, no. 125: "An outline of sleeper legends in the Middle Ages and later. The spells are cast by sight, sound, smells, etc. Analogues to cantiga 103 are found in Portugal, Navarre, Picardy, France, Belgium, Sweden, Wales, Ireland, Germany, and Austria. Others come from early non Christian sources. These two parts of a series of articles (see also Filgueira Valverde, 1925) paraphrase the contents or events of most of these analogues. The notes tell where most can be located."