Fixed points for (psi, phi)-weak contractions. - Ovidiu Popescu (Appl. Math. Lett., 2011)

Two generalizations of some fixed point theorems. - Ovidiu Popescu (Comput. Math. Appl., 2011)

Some Fixed Point Theorems for Quadratic Quasicontractive Mappings. - Ovidiu Popescu; Gabriel Stan (Symmetry, 2019)

Two Fixed Point Theorems Concerning F-Contraction in Complete Metric Spaces. - Ovidiu Popescu; Gabriel Stan (Symmetry, 2020)

Some Fixed Point Theorems for (a-p)-Quasicontractions. - Ovidiu Popescu; Gabriel Stan (Symmetry, 2020)