Nominal Group Technique
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Delp, P., Thesen, A., Motiwalla, J. and Seshardi, N., 1977. Nominal group technique. Systems tools for project planning, 5.
Harvey, N. and Holmes, C.A., 2012. Nominal group technique: an effective method for obtaining group consensus. International journal of nursing practice, 18(2), pp.188-194. PDF