Antonio Roldán

Directions of directional, ordered directional and strengthened ordered directional increasingness of linear and ordered linear fusion operators

Humberto Bustince, Radko Mesiar, Cédric Marco-Detchart, 2018, 2018 IEEE Symposium Series on Computational Intelligence (SSCI).

Some multidimensional fixed point theorems on partially preordered G∗-metric spaces under (ψ,φ)-contractivity conditions

Antonio Roldán, Erdal Karapınar, E. Karapınar, 2013, Fixed Point Theory and Applications.