@article{oai:ynu.repo.nii.ac.jp:00006994,
 author = {Egami, Chikahiro and Hirano, Norimichi},
 issue = {1},
 journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学},
 month = {},
 note = {application/pdf, In the present paper, we investigate the existence and the global attractivity of positive periodic solutions of a system of m-species prey and n-species predators.},
 pages = {45--61},
 title = {PERIODIC SOLUTIONS IN A CLASS OF PERIODIC DELAY PREDATOR-PREY SYSTEMS},
 volume = {51},
 year = {2004}
}