On the oscillation of delay differential equations with real coefficients. Agwo, H.A. — 1999 International Journal of Mathematics and Mathematical Sciences
Necessary and sufficient conditions for the oscillation of delay differential equations with a piecewise constant argument. Agwo, H.A. — 1998 International Journal of Mathematics and Mathematical Sciences
A new extension of Hilbert's inequality for multifunctions with best constant factors. Agwo, H.A. — 2009 Acta Mathematica Universitatis Comenianae. New Series