1WANG Dingjiang Department of Mathematics, Pingdingshan Teacher’s College, He’nan 467000ZHANG Yufeng Department of Mathematics, Yanbian Teacher’s College, Jilin 133000.The Property of Solution of a Nonstationary Forest Evolution System[J].Systems Science and Systems Engineering,1993,3(3):281-288. 被引量:23
2WANG Hui(Department of Mathematics.Harbin Normal University,Harbin 150080)HOU Xuezhang(Deparfment of Mathematics,Northeast Normal University,Changchun 130024).A Control Problem for Nonstationary Population Systems[J].Systems Science and Systems Engineering,1994,4(1):66-73. 被引量:7