https://doi.org/10.1108/GM-08-2014-0071 https://doi.org/10.2307/2578815 https://doi.org/10.1177/0256090915598264 https://doi.org/10.1016/j.sbspro.2010.03.076 https://doi.org/10.2139/ssrn.2019447 https://doi.org/10.1016/j.econlet.2013.04.043 https://doi.org/10.1093/wbro/4.2.187 https://doi.org/10.2139/ssrn.301946 https://doi.org/10.1257/jep.14.4.141 https://doi.org/10.1108/03068290910921253