Further Reading https://docs.gatesfoundation.org/documents/wwl-report-measuringestimating-social-value-creation.pdf
http://ec.europa.eu/internal_market/social_business/docs/expertgroup/social_impact/140605-sub-group-report_en.pdf http://journals.sagepub.com/doi/pdf/10.1177/0899764009351111
http://community-wealth.org/sites/clone.communitywealth.org/files/downloads/report-redf96-intro.pdf https://ssir.org/articles/entry/why_iris