Johnson, Leslie Peter, The Grail Question in Wolfram and Elsewhere, in Groos, Arthur B, Lacy, Norris J, Perceval/Parzival. A Casebook, Arthurian Characters and Themes, 6, Routledge, New York (u.a.), 2002, 199-218 (zuerst erschienen in: From Wolfram and Petrarch to Goethe and Grass. Studies in Literature in Honour of Leonard Forster. Hg. von D. H. Green u.a. Baden-Baden 1982, S. 83-102)

Interpretation: , 118,29-119,8 (201), 127,21-127,24 (209), 128,4-128,10 (201), 129,8 (209), 141,2-141,10 (201), 141,30-142,2 (210), 159,20-160,30 (201), 162,29-162,30 (209), 177,12-177,24 (201), 201,19-201,20 (210), 229,1-229,22 (218 Anm. 27), 239,6-239,17 (211), 239,8-239,10 (215), 239,17 (213), 240,3-240,9 (213, 214), 241,1-241,30 (215), 251,12 (217 Anm. 16), 255,5-255,19 (212), 255,5 (214), 255,17-255,18 (214), 255,19 (215), 315,26-316,3 (212, 213), 316,26-316,27 (212, 215), 448,21-448,26 (211), 452,9 (215), 457,10 (215), 465,5-465,6 (201), 465,13 (201), 466,13 (201), 473,13-473,19 (212), 473,18-473,19 (202), 475,8 (201), 475,13-476,11 (201), 484,23-484,30 (213), 484,27 (202), 488,16-488,20 (213), 488,26-488,30 (213), 499,20 (201, 209)