https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.ciesas.edu.mx/publicaciones/clasicos/00_CCA/Articulos_CCA/CCA_PDF/035_CHAYANOV_On_the_theory.pdf&ved=2ahUKEwigsZmNp83fAhUNXa0KHcfcCEQQFjAAegQIBxAB&usg=AOvVaw1Oalk2fwq57gWpqQH7fvlG