Complex sentence: In 1964--65, a renewed interest in Shanina, largely due to the publication of her diary, arose in the Soviet press, particularly in the newspaper "Severny Komsomolets", which asked Shanina's contemporaries to write what they knew about her.
Split into simpler sentences: In 1964--65 a renewed interest in Shanina arose in the Soviet press, largely due to the publication of her diary. The newspaper "Severny Komsomolets" asked Shanina's contemporaries to write what they knew about her.