Hugenholtz, P. Bernt; Okediji, Ruth (March 7, 2012). "Conceiving an International Instrument on Limitations and Exceptions to Copyright". Amsterdam Law School Research Paper. 2012: 37. doi:10.2139/ssrn.2017629. S2CID152366700.
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Hugenholtz, P. Bernt; Okediji, Ruth (March 7, 2012). "Conceiving an International Instrument on Limitations and Exceptions to Copyright". Amsterdam Law School Research Paper. 2012: 37. doi:10.2139/ssrn.2017629. S2CID152366700.