Notes, Comments and Preliminary results Sep 30 2025 Ana-Isabel Guerra and Ferran Sancho   The implications of alternative import assumptions on multipliers: Should we be concerned?   Abstract  Contact Information  Citation  Full Text  -  Note   Jun 30 2022 Conxita Pinyol and Ferran Sancho   An elementary proof of the existence of the Leontief inverse   Abstract  Contact Information  Citation  Full Text  -  Note   Feb 06 2012 Ferran Sancho   Straightening out the concept of direct and indirect input requirements   Abstract  Contact Information  Citation  Full Text  -  Note