@ARTICLE{
author={Petkovic Miodrag S,Sharma Janak Raj},
year={2016},
title={On some efficient derivative-free iterative methods with memory for solving systems of nonlinear equations},
journal={NUMERICAL ALGORITHMS},
volume={71},
number={2},
pages={457-474},
document_type={Article},
} 

@ARTICLE{
author={Sharma Janak Raj,Arora Himani,Petkovic Miodrag S},
year={2014},
title={An efficient derivative free family of fourth order methods for solving systems of nonlinear equations},
journal={APPLIED MATHEMATICS AND COMPUTATION},
volume={235},
number={},
pages={383-393},
document_type={Article},
}