MR1285480
Zou, Xing Fu
Xingfu ZOU
Comparison theorems concerning the oscillation of higher order functional-differential equations with middle terms
Funkcialaj Ekvacioj. Serio Internacia
37
1994
45--57
http://fe.math.kobe-u.ac.jp/FE/Free/vol37/fe37-1-3.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE35-40-en_KML/fe37-045-057/fe37-045-057.pdf
http://www.ams.org/mathscinet-getitem?mr=MR1285480
fe37-045-057
1994
Comparison Theorems Concerning the Oscillation of Higher Order Functional Differential Equations with Middle Terms
ZOU, Xingfu
ZOU, Xingfu
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