Comparison and Oscillation Theorems for singular Ultrahyperbolic Equations
The Interior and Exterior Problems For The Generalized Poly-Axially Symmetric Helmholtz Equation
On Absolute a-summability factors
Radii of Valence of Certain Analytic Functions with Negative Coefficients
On │Ñ Pn ׀k | Summability Factors of Infinite Series