<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">N.T. Markova</style></author><author><style face="normal" font="default" size="100%">P.S. Simeonov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">OSCILLATION CRITERIA FOR FIRST ORDER NONLINEAR DIFFERENTIAL EQUATIONS WITH ADVANCED ARGUMENTS</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">34K15</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.acadsol.eu/en/articles/10/2/9.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">14</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;In this paper some new oscillation criteria are obtained for the first order nonlinear differential equation $${ x′ (t) = \sum^{n}_{i=1} p_i(t)f_i(x(σ_0(t)), . . . , x(σ_m(t))), \ \ \ \ \ t ≥ α }$$ with advanced arguments, where ${n ≥ 1, \ m ≥ 1 }$are integers, ${ p_i(t) ≥ 0, \&amp;nbsp; σ_j (t) ≥ t }$ and ${ x_0f_i(x_0, . . . , x_m) &amp;gt; 0 }$ for ${ t ≥ α, \ x_0x_j &amp;gt; 0, \ \&amp;nbsp; i = 1, . . . , n, \ \ j = 0, . . . , m.}$&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><section><style face="normal" font="default" size="100%">209</style></section></record></records></xml>