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Pelen N. N., GÜVENİLİR A. F., Kaymakçalan B.
Abstract and Applied Analysis, vol.2016, 2016 (Scopus)
We consider two-dimensional predator-prey system with Beddington-DeAngelis type functional response on periodic time scales in shifts. For this special case we try to find under which conditions the system has δ ± -periodic solution.