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Chatzarakis George E.; Dix Julio G.: Oscillations of nonlinear differential equations with several deviating arguments. (2018)
Chatzarakis George E.; Diblík Josef; Stavroulakis Ioannis P.: Explicit integral criteria for the existence of positive solutions of first order linear delay equations. (2016)
Chatzarakis George E.: Existence of positive solutions of linear delay difference equations with continuous time ē. (2015)
Chatzarakis George E.; Stavroulakis Ioannis P.: Oscillation of advanced difference equations with variable arguments. (2012)