BLEYER, András; PREUSS, Wolfgang. A REMARK ON THE COMPLEX SHIFT OPERATOR eXS Periodica Polytechnica Electrical Engineering, [S. l.], v. 22, n. 2-3, p. 131–140, 1978. Disponível em: https://pp.bme.hu/ee/article/view/4861. Acesso em: 19 may. 2024.