MR1189898
Philos, Ch. G.
Ch. G. PHILOS
Oscillation for first order linear delay differential equations with variable coefficients
Funkcialaj Ekvacioj. Serio Internacia
35
1992
307--319
http://fe.math.kobe-u.ac.jp/FE/Free/vol35/fe35-2-6.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE35-40-en_KML/fe35-307-319/fe35-307-319.pdf
http://www.ams.org/mathscinet-getitem?mr=MR1189898
fe35-307-319
1992
Oscillation for First Order Linear Delay Differential Equations with Variable Coefficients
PHILOS, Ch. G.
PHILOS, Ch. G.
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