@Book{FIL20120021747, title = "The book of Chess, Dice and Tables of Alfonso X The Learned : A dice\textquotesingle s game called Guiguiesca", author = "Basulto Santos, Jes\'{u}s. The book of Chess, Dice and Tables of Alfonso X The Learned: A dice\textquotesingle s game called Guiguiesca", URL = "http://www.larramendi.es/es/consulta/registro.do?id=7499", year = "2009", }