@article{Hasson2000,
author = {Hasson, F. and Keeney, S. and McKennea, H.},
title= {Research guidelines for the Delphi survey technique},
year = {2000},
doi = {10.1046/j.1365-2648.2000.t01-1-01567.x},
volume = {32},
number = {4},
pages = {1008--1015},
}