Author: Cheng, Sui-Sun
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Yang, Qi Gui; Cheng, Sui-Sun:
Oscillation theorems for certain even order neutral differential equations.
(English).
Archivum Mathematicum,
vol. 43
(2007),
issue 2,
pp. 105-122
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Guo, Cheng-Jun; Wang, Gen-Qiang; Cheng, Sui-Sun:
Periodic solutions for a neutral functional differential equation with multiple variable lags.
(English).
Archivum Mathematicum,
vol. 42
(2006),
issue 1,
pp. 1-10
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