The argument delay and oscillatory properties of differential equation of n -th order Ján Ohriska (1979) Czechoslovak Mathematical Journal
The existence and some properties of solutions of a differential equation with deviated argument Józef Banaś, Urszula Stopka (1981) Commentationes Mathematicae Universitatis Carolinae
The influence of argument delay on oscillatory properties of a second-order differential equation Ján Ohriska (1978) Mathematica Slovaca
The most general transformation of homogeneous linear differential retarded equations of the first order Václav Tryhuk (1980) Archivum Mathematicum
The oscillation of a differential equation of second order with deviating argument Jozef Džurina (1992) Mathematica Slovaca
Topological properties of solution sets for sweeping processes with delay. Castaing, C., Monteiro Marques, M.D.P. (1997) Portugaliae Mathematica
Total oscillatory behaviour globally in the delays Arino, O., Ferreira, José M. (1989) Portugaliae mathematica