“Niklas Luhmann’s Systems Theory and the Challenges Involved for Legally Achieving the of Right to Health in Regard to Medicines”. RECIIS 1, no. 2 (December 31, 2007). Accessed October 1, 2026. https://homologacao-reciis.icict.fiocruz.br/index.php/reciis/article/view/908.