Clifford algebra-valued orthogonal polynomials in the open unit ball of Euclidean space. - Fred Brackx; Nele De Schepper; Frank Sommen (Int. J. Math. Math. Sci., 2004)

Clifford algebra-valued orthogonal polynomials in Euclidean space. - Fred Brackx; Nele De Schepper; Frank Sommen (J. Approx. Theory, 2005)

The Two-Dimensional Clifford-Fourier Transform. - Fred Brackx; Nele De Schepper; Frank Sommen (J. Math. Imaging Vis., 2006)

The Cylindrical Fourier Transform. - Fred Brackx; Nele De Schepper; Frank Sommen (Geometric Algebra Computing, 2010)

Fractional Fourier transforms of hypercomplex signals. - Hendrik De Bie; Nele De Schepper (Signal Image Video Process., 2012)

Convolution Products for Hypercomplex Fourier Transforms. - Roxana Bujack; Hendrik De Bie; Nele De Schepper; Gerik Scheuermann (J. Math. Imaging Vis., 2014)

Connecting spatial and frequency domains for the quaternion Fourier transform. - Hendrik De Bie; Nele De Schepper; Todd A. Ell; K. Rubrecht; Stephen J. Sangwine (Appl. Math. Comput., 2015)