Romanyuk, A.S. (1993) “The School: ‘Fourier Series: Theory and Applications’”,
Ukrains’kyi Matematychnyi Zhurnal
, 45(6), p. 879. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/5830
(Accessed: 10 April 2025).