Chatzarakis George E. and Dix Julio G.: Oscillations of nonlinear differential equations with several deviating arguments. (2018)
Dix Julio G. and Karpuz Basak and Rath Radhanath: Necessary and sufficient conditions for the oscillation of differential equations involving distributed argument. (2011)
Dix Julio G.: Oscillation of solutions to a higher-order neutral PDE with disturbed deviating arguments. (2010)