INTEGRAL TRANSFORMS AND SPECIAL FUNCTIONS, cilt.31, sa.6, ss.437-470, 2020 (SCI-Expanded)
In this paper some new classes of two-variable orthogonal functions by using Fourier transforms of two-variable orthogonal polynomials are introduced. Orthogonality relations are obtained by using the Parseval identity. Recurrence relations for new families of orthogonal functions are also presented.