A Compact Fourth Order Scheme for the Helmholtz Equation in Polar Coordinates. - Darrell Steven Britt; Semyon Tsynkov; Eli Turkel (J. Sci. Comput., 2010)

A High-Order Numerical Method for the Helmholtz Equation with Nonstandard Boundary Conditions. - Darrell Steven Britt; S. V. Tsynkov; Eli Turkel (SIAM J. Sci. Comput., 2013)

Numerical solution of the wave equation with variable wave speed on nonconforming domains by high-order difference potentials. - Darrell Steven Britt; Semyon Tsynkov; Eli Turkel (J. Comput. Phys., 2018)

A High Order Compact Time/Space Finite Difference Scheme for the Wave Equation with Variable Speed of Sound. - Darrell Steven Britt; Eli Turkel; Semyon Tsynkov (J. Sci. Comput., 2018)