On monotone solutions of linear advanced equations. Kvinikadze, G. — 1999 Memoirs on Differential Equations and Mathematical Physics
On the oscillation of solutions of first-order delay differential inequalities and equations. Koplatadze, R.; Kvinikadze, G. — 1994 Georgian Mathematical Journal
On oscillation of second order linear difference equations with deviated arguments. Koplatadze, R.; Kvinikadze, G. — 1997 Memoirs on Differential Equations and Mathematical Physics
Properties A and B of n th-order linear differential equations with deviating argument. Koplatadze, R.; Kvinikadze, G.; Stavroulakis, I.P. — 1999 Georgian Mathematical Journal