Geodesic
Oscillation theorems for neutral differential equations of higher order
Czechoslovak Mathematical Journal, Tome 54 (2004) no. 1, pp. 107-117

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In this paper we present some new oscillatory criteria for the $n$-th order neutral differential equations of the form \[ (x(t)\pm p(t)x[\tau (t)])^{(n)} +q(t)x[\sigma (t)] =0. \] The results obtained extend and improve a number of existing criteria.
In this paper we present some new oscillatory criteria for the $n$-th order neutral differential equations of the form \[ (x(t)\pm p(t)x[\tau (t)])^{(n)} +q(t)x[\sigma (t)] =0. \] The results obtained extend and improve a number of existing criteria.
Classification : 34C10, 34K11, 34K40
Keywords: neutral equation; delayed argument 
Džurina, Jozef. Oscillation theorems for neutral differential equations of higher order. Czechoslovak Mathematical Journal, Tome 54 (2004) no. 1, pp. 107-117. http://geodesic.mathdoc.fr/item/CMJ_2004_54_1_a9/
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