@article{FORUM_1990__2_3_141628,
     author = {Taha M. Abu-Kaff and Rajbir S. Ahiya},
     title = {On {Oscillation} and {Nonoscillation} {Behaviour} of {Bounded} {Solutions} of {N-th} {Order} {Delay} {Differential} {Equations.}},
     journal = {Forum mathematicum},
     pages = {35--44},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1990},
     zbl = {0687.34029},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1990__2_3_141628/}
}