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Fraser, Duncan and Unset (1978) Much virtue in ‘nothing’: Cordelia's part in the first scene of King Lear. Cambridge Quarterly, VIII (1). pp. 1-10. ISSN 0008-199X
Fraser, Robert Duncan (2013) Ram alley, or Merry tricks (Lording Barry, 1611): a critical edition. Doctoral thesis (PhD), University of Sussex.