Subjective valuation of effort
By Vikram Chib
By Vikram Chib
By Risto Ilmoniemi
By William Lytton
By Claudia Vargas
By Daniel Fraiman
By Oswaldo Baffa Filho
By Leonardo Cohen
By Yves Frégnac
By Maria Elisa Pimentel Piemonte , Rafael Bassi Stern