A Theorem on the Geometric Mean of an Entire Function
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
On Absolute a-summability factors
Radii of Valence of Certain Analytic Functions with Negative Coefficients