Ravi P. Agarwal, Donal O Regan, Christopher C. Tisdell, Patricia J. Y. Wong. Constant-sign solutions of a system of Volterra integral equations. Computers & Mathematics with Applications, 54(1):58-75, 2007. [doi]
@article{AgarwalOTW07,
title = {Constant-sign solutions of a system of Volterra integral equations},
author = {Ravi P. Agarwal and Donal O Regan and Christopher C. Tisdell and Patricia J. Y. Wong},
year = {2007},
doi = {10.1016/j.camwa.2006.10.031},
url = {http://dx.doi.org/10.1016/j.camwa.2006.10.031},
tags = {C++},
researchr = {https://researchr.org/publication/AgarwalOTW07},
cites = {0},
citedby = {0},
journal = {Computers & Mathematics with Applications},
volume = {54},
number = {1},
pages = {58-75},
}