FRIGON, Marlène. “Fixed Point Theorems for Maps on Cones in Fréchet Spaces via the Projective Limit Approach : Dedicated to Professor Ioan A. Rus on the Occasion of His 80th Anniversary”. Studia Universitatis Babeș-Bolyai Mathematica, vol. 61, no. 4, Dec. 2016, pp. 393-08, https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5623.