@article{a74d4174eb0541c8a440f45154475367,
title = "Fixed-point theorems in partially ordered metric spaces for operators with PPF dependence",
keywords = "Existence, Fixed point, Lower solution, Partially ordered set, Periodic boundary value problem with delay, PPF (past, present and future) dependence, Uniqueness",
author = "Z. Drici and McRae, {F. A.} and {Vasundhara Devi}, J.",
year = "2007",
month = jul,
day = "15",
doi = "10.1016/j.na.2006.06.022",
language = "English",
volume = "67",
pages = "641--647",
journal = "Nonlinear Analysis, Theory, Methods and Applications",
issn = "0362-546X",
number = "2",
}