SlDDIQI, A., & ANSARI, Q. (1993). ON THE NONLINEAR IMPLICIT COMPLEMENTARITY PROBLEM. International Journal of Mathematics and Mathematical Sciences, 1993(), 783-789. https://doi.org/10.1155/S0161171293000973
BEG, I. (1999). A CHARACTERIZATION OF RANDOM APPROXIMATIONS. International Journal of Mathematics and Mathematical Sciences, 1999(), 209-211. https://doi.org/10.1155/S0161171299222090