Zapata Granada , Mateo, and Hugo Alberto López Duque. 2022. “The Principle of Planning As a Cause of Absolute Nullity of State Contracts: A Jurisprudential Analysis from the Principle of Taxation”. Revista De La Facultad De Derecho Y Ciencias Políticas 52 (136): 124-54. https://doi.org/10.18566/rfdcp.v52n136.a06.