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