MÁTÉ, László. ON THE CONNECTIONS BETWEEN HELSON SETS AND APPROXIMATION BY CONVOLUTIONS Periodica Polytechnica Electrical Engineering, [S. l.], v. 14, n. 4, p. 373–379, 1970. Disponível em: https://pp.bme.hu/ee/article/view/5122. Acesso em: 14 may. 2024.