@article{Osterling Parodi_1994, title={La controversia sobre las obligaciones naturales}, url={https://revistas.pucp.edu.pe/index.php/themis/article/view/11408}, number={30}, journal={THEMIS Revista de Derecho}, author={Osterling Parodi, Felipe}, year={1994}, month={nov.}, pages={129-139} }