RT Journal T1 Existence and Stability of Periodic Solution for a Lasota-Wazewska Model with Discontinuous Harvesting A1 Chao Yang,Runjie Li PB Acta mathematica scientia,Series A FD 2019-08-26 YR 2019 JF Acta mathematica scientia, Series A JO Acta mathematica scientia,Series A VO 39 IS 4 SP 785 DO K1 ;Lasota-Wazewska model;Mixed delayed system;Discontinuous harvesting;Positive periodic solution;Exponential stability LK {http://121.43.60.238/sxwlxbA/EN/article/article_15905.shtml}