SHI Wen-ying
,
ZHAO Xin-sheng
,
DAI Xiao-dong
. Oscillation Theorems for Second-order Damped Differential Equations with Distributed Deviating Arguments[J]. Journal of Hebei University(Natural Science Edition), 2007
, 27(4)
: 340
-344
.
DOI: 10.3969/j.issn.1000-1565.2007.04.002
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