Ozola, Silvija. “ALEXANDER STREKAVIN’S (1889–1971) DRAWINGS OF MITAU – EVIDENCE FOR THE 19TH– EARLY 20TH-CENTURY INVENTIONS”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 4 (May 28, 2021): 653–679. Accessed May 7, 2024. https://journals.ru.lv/index.php/SIE/article/view/6203.