@article{c4932a2fd82841778505b9da55adb2da,
title = "Hamiltonian symmetric groups and multiple periodic solutions of differential delay equations",
keywords = "Differential-delay equations, Hamiltonian systems, Index, Multiple periodic solutions, Symmetric groups",
author = "Jibin Li and He, \{Xue Zhong\} and Zhengrong Liu",
year = "1999",
month = feb,
day = "16",
doi = "10.1016/S0362-546X(97)00623-8",
language = "English",
volume = "35",
pages = "457--474",
journal = "Nonlinear Analysis, Theory, Methods and Applications",
issn = "0362-546X",
number = "4",
}