MR1199476
Qian, Chuan Xi and Yan, Ju Rang
Chuanxi QIAN and Jurang YAN
Existence and comparison results of positive solutions of difference equations
Funkcialaj Ekvacioj. Serio Internacia
35
1992
581--595
http://fe.math.kobe-u.ac.jp/FE/Free/vol35/fe35-3-12.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE35-40-en_KML/fe35-581-594/fe35-581-594.pdf
http://www.ams.org/mathscinet-getitem?mr=MR1199476
fe35-581-595
1992
Existence and Comparison Results of Positive Solutions of Difference Equations
Chuanxi QIAN and Jurang YAN
Chuanxi QIAN and Jurang YAN
1
Erbe, L. H.; Zhang, B. G.
Oscillation of discrete analogues of delay equations
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