A Concise Guide to Complex Hadamard Matrices. - Wojciech Tadej; Karol Zyczkowski (Open Syst. Inf. Dyn., 2006)

Defect and Equivalence of Unitary Matrices. The Fourier Case. Part I. - Wojciech Tadej (Open Syst. Inf. Dyn., 2018)

Defect and Equivalence of Unitary Matrices. The Fourier Case. Part II. - Wojciech Tadej (Open Syst. Inf. Dyn., 2019)