Kahane, Henry, Kahane, Renée, The Puzzle of Wolfram's Patrigalt (Parz. 66.23 and 805.22), ArchStud, 227, 1990, 127-130

heterodoxe Einflüsse:

Quellen - allgemein: 66,23-66,28 (127), 805,20-805,23 (128)