Gutiérrez Ossa, J. A., and R. D. Restrepo Avendaño. “Londoño & Frenk’s Structured Pluralism Regarding the Articulation and Modulation of the General System of Social Security in Health (SGSSS) in Colombia”. Sociedad Y Economía, no. 23, Jan. 2013, pp. 183-04, doi:10.25100/sye.v0i23.3991.