TITLE: Russian books on Fourier Series
QUESTION [5 upvotes]: Russians are known on having very strong literature in Mathematics and Sciences overall. So as I am willing to improve my knowledge and problem solving in real-analysis, especially in Fourier series, so I wonder what are the books written and used by the Russians( I have a somewhat good level in Russian)?

REPLY [2 votes]: I hope it can help you :
Season $6-7$ of volume $3$ of  The fundamentals of mathematical analysis by Grigorii Fichtenholz 
фихтенгольц - курс дифференциального и интегрального исчисления том 3:
original language book
author: Фихтенгольц, Григорий Михайлович