The oscillation of linear first order differential systems. Hishyar, Abdullah Kh.; Al Dosary, K.T. — 2003 APPS. Applied Sciences
A note on the oscillation of second order differential equations Hishyar Kh. Abdullah — 2004 Czechoslovak Mathematical Journal We give a sufficient condition for the oscillation of linear homogeneous second order differential equation y ' ' + p ( x ) y ' + q ( x ) y = 0 , where p ( x ) , q ( x ) ∈ C [ α , ∞ ) and α is positive real number.