Barros, Laécio C., Suzana A. Oliveira Souza, and Pedro A. Tonelli. 2017. “A Note on Asymptotic Smoothness of the Extensions of Zadeh”. Proyecciones (Antofagasta, On Line) 21 (2):141-53. https://doi.org/10.4067/S0716-09172002000200003.